diff --git a/src/me/mrCookieSlime/Slimefun/Setup/SlimefunSetup.java b/src/me/mrCookieSlime/Slimefun/Setup/SlimefunSetup.java
index 766364fef..25ac142df 100644
--- a/src/me/mrCookieSlime/Slimefun/Setup/SlimefunSetup.java
+++ b/src/me/mrCookieSlime/Slimefun/Setup/SlimefunSetup.java
@@ -2284,7 +2284,7 @@ public class SlimefunSetup {
 
 		new SlimefunGadget(Categories.MACHINES_1, SlimefunItems.CRUCIBLE, "CRUCIBLE", RecipeType.ENHANCED_CRAFTING_TABLE,
 		new ItemStack [] {new ItemStack(Material.HARD_CLAY), null, new ItemStack(Material.HARD_CLAY), new ItemStack(Material.HARD_CLAY), null, new ItemStack(Material.HARD_CLAY), new ItemStack(Material.HARD_CLAY), new ItemStack(Material.FLINT_AND_STEEL), new ItemStack(Material.HARD_CLAY)},
-		new ItemStack [] {new ItemStack(Material.COBBLESTONE, 16), new ItemStack(Material.LAVA_BUCKET), new ItemStack(Material.LEAVES, 16), new ItemStack(Material.WATER_BUCKET), new ItemStack(Material.HARD_CLAY, 12), new ItemStack(Material.WATER_BUCKET)})
+		new ItemStack [] {new ItemStack(Material.COBBLESTONE, 16), new ItemStack(Material.LAVA_BUCKET), new ItemStack(Material.LEAVES, 16), new ItemStack(Material.WATER_BUCKET), new ItemStack(Material.HARD_CLAY, 12), new ItemStack(Material.LAVA_BUCKET)})
 		.register(true, new ItemInteractionHandler() {
 
 			@Override
@@ -2297,6 +2297,7 @@ public class SlimefunSetup {
 						for (ItemStack convert: RecipeType.getRecipeInputs(machine)) {
 							if (input != null) {
 								if (SlimefunManager.isItemSimiliar(input, convert, true)) {
+									e.setCancelled(true);
 									ItemStack removing = input.clone();
 									removing.setAmount(convert.getAmount());
 									p.getInventory().removeItem(removing);
@@ -2305,7 +2306,7 @@ public class SlimefunSetup {
 
 										@Override
 										public void run() {
-											if (input.getType() == Material.COBBLESTONE) {
+											if (input.getType() == Material.COBBLESTONE || input.getType() == Material.HARD_CLAY) {
 												block.setType(Material.LAVA);
 												block.setData((byte) 7);
 												block.getWorld().playSound(block.getLocation(), Sound.BLOCK_LAVA_POP, 1F, 1F);
@@ -2319,7 +2320,7 @@ public class SlimefunSetup {
 
 												@Override
 												public void run() {
-													if (input.getType() == Material.COBBLESTONE) {
+													if (input.getType() == Material.COBBLESTONE || input.getType() == Material.HARD_CLAY) {
 														block.setType(Material.LAVA);
 														block.setData((byte) 6);
 														block.getWorld().playSound(block.getLocation(), Sound.BLOCK_LAVA_POP, 1F, 1F);
@@ -2333,7 +2334,7 @@ public class SlimefunSetup {
 
 														@Override
 														public void run() {
-															if (input.getType() == Material.COBBLESTONE) {
+															if (input.getType() == Material.COBBLESTONE || input.getType() == Material.HARD_CLAY) {
 																block.setType(Material.LAVA);
 																block.setData((byte) 5);
 																block.getWorld().playSound(block.getLocation(), Sound.BLOCK_LAVA_POP, 1F, 1F);
@@ -2347,7 +2348,7 @@ public class SlimefunSetup {
 
 																@Override
 																public void run() {
-																	if (input.getType() == Material.COBBLESTONE) {
+																	if (input.getType() == Material.COBBLESTONE || input.getType() == Material.HARD_CLAY) {
 																		block.setType(Material.LAVA);
 																		block.setData((byte) 4);
 																		block.getWorld().playSound(block.getLocation(), Sound.BLOCK_LAVA_POP, 1F, 1F);
@@ -2361,7 +2362,7 @@ public class SlimefunSetup {
 
 																		@Override
 																		public void run() {
-																			if (input.getType() == Material.COBBLESTONE) {
+																			if (input.getType() == Material.COBBLESTONE || input.getType() == Material.HARD_CLAY) {
 																				block.setType(Material.LAVA);
 																				block.setData((byte) 3);
 																				block.getWorld().playSound(block.getLocation(), Sound.BLOCK_LAVA_POP, 1F, 1F);
@@ -2375,7 +2376,7 @@ public class SlimefunSetup {
 
 																				@Override
 																				public void run() {
-																					if (input.getType() == Material.COBBLESTONE) {
+																					if (input.getType() == Material.COBBLESTONE || input.getType() == Material.HARD_CLAY) {
 																						block.setType(Material.LAVA);
 																						block.setData((byte) 2);
 																						block.getWorld().playSound(block.getLocation(), Sound.BLOCK_LAVA_POP, 1F, 1F);
@@ -2389,7 +2390,7 @@ public class SlimefunSetup {
 
 																						@Override
 																						public void run() {
-																							if (input.getType() == Material.COBBLESTONE) {
+																							if (input.getType() == Material.COBBLESTONE || input.getType() == Material.HARD_CLAY) {
 																								block.setType(Material.LAVA);
 																								block.setData((byte) 1);
 																								block.getWorld().playSound(block.getLocation(), Sound.BLOCK_LAVA_POP, 1F, 1F);
@@ -2403,7 +2404,7 @@ public class SlimefunSetup {
 
 																								@Override
 																								public void run() {
-																									if (input.getType() == Material.COBBLESTONE) {
+																									if (input.getType() == Material.COBBLESTONE || input.getType() == Material.HARD_CLAY) {
 																										block.setType(Material.STATIONARY_LAVA);
 																										block.setData((byte) 0);
 																										block.getWorld().playSound(block.getLocation(), Sound.BLOCK_LAVA_POP, 1F, 1F);
diff --git a/src/me/mrCookieSlime/Slimefun/listeners/BackpackListener.java b/src/me/mrCookieSlime/Slimefun/listeners/BackpackListener.java
index 01f05c9d1..97274b1c6 100644
--- a/src/me/mrCookieSlime/Slimefun/listeners/BackpackListener.java
+++ b/src/me/mrCookieSlime/Slimefun/listeners/BackpackListener.java
@@ -6,6 +6,7 @@ import me.mrCookieSlime.Slimefun.Variables;
 import me.mrCookieSlime.Slimefun.SlimefunStartup;
 import me.mrCookieSlime.Slimefun.Lists.SlimefunItems;
 import me.mrCookieSlime.Slimefun.Objects.SlimefunItem.Juice;
+import me.mrCookieSlime.Slimefun.Objects.SlimefunItem.SlimefunBackpack;
 import me.mrCookieSlime.Slimefun.Objects.SlimefunItem.SlimefunItem;
 import me.mrCookieSlime.Slimefun.Setup.Messages;
 import me.mrCookieSlime.Slimefun.Setup.SlimefunManager;
@@ -18,8 +19,10 @@ import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.block.Action;
+import org.bukkit.event.inventory.ClickType;
 import org.bukkit.event.inventory.InventoryClickEvent;
 import org.bukkit.event.inventory.InventoryCloseEvent;
+import org.bukkit.event.player.PlayerDropItemEvent;
 import org.bukkit.event.player.PlayerInteractEvent;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
@@ -40,28 +43,40 @@ public class BackpackListener implements Listener {
 		}
 	}
 	
+	@EventHandler
+	public void onItemDrop(PlayerDropItemEvent e) {
+		if (Variables.backpack.containsKey(e.getPlayer().getUniqueId())){
+			ItemStack item = e.getItemDrop().getItemStack();
+			SlimefunItem sfItem = SlimefunItem.getByItem(item);
+			if (sfItem instanceof SlimefunBackpack) e.setCancelled(true);
+		}
+	}
+	
 	@EventHandler
 	public void onClick(InventoryClickEvent e) {
 		if (Variables.backpack.containsKey(e.getWhoClicked().getUniqueId())) {
 			ItemStack item = Variables.backpack.get(e.getWhoClicked().getUniqueId());
-			if (SlimefunManager.isItemSimiliar(item, SlimefunItem.getItem("COOLER"), false)) {
-				SlimefunItem sfItem = SlimefunItem.getByItem(e.getCurrentItem());
-				if (e.getCurrentItem() == null);
-				else if (sfItem == null) e.setCancelled(true);
-				else if (!(sfItem instanceof Juice)) e.setCancelled(true);
+			if (e.getClick() == ClickType.NUMBER_KEY) {
+				ItemStack hotbarItem = e.getWhoClicked().getInventory().getItem(e.getHotbarButton());
+				SlimefunItem sfItem = SlimefunItem.getByItem(hotbarItem);
+				if (hotbarItem != null && hotbarItem.getType().toString().contains("SHULKER_BOX"))  e.setCancelled(true);
+				else if (sfItem instanceof SlimefunBackpack) e.setCancelled(true);
+			}
+			else {
+				SlimefunItem sfItem = SlimefunItem.getByItem(e.getCurrentItem());
+				if (SlimefunManager.isItemSimiliar(item, SlimefunItem.getItem("COOLER"), false)) {
+					if (e.getCurrentItem() == null);
+					else if (sfItem == null) e.setCancelled(true);
+					else if (!(sfItem instanceof Juice)) e.setCancelled(true);
+				}
+				else if (e.getCurrentItem() != null && e.getCurrentItem().getType().toString().contains("SHULKER_BOX")) e.setCancelled(true);
+				else if (sfItem instanceof SlimefunBackpack) e.setCancelled(true);
+				else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.VOIDBAG_SMALL, false)) e.setCancelled(true);
+				else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.VOIDBAG_MEDIUM, false)) e.setCancelled(true);
+				else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.VOIDBAG_BIG, false)) e.setCancelled(true);
+				else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.VOIDBAG_LARGE, false)) e.setCancelled(true);
+				else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.BOUND_VOIDBAG, false)) e.setCancelled(true);
 			}
-			else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), item, true)) e.setCancelled(true);
-			else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.BACKPACK_SMALL, false)) e.setCancelled(true);
-			else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.BACKPACK_MEDIUM, false)) e.setCancelled(true);
-			else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.BACKPACK_LARGE, false)) e.setCancelled(true);
-			else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.WOVEN_BACKPACK, false)) e.setCancelled(true);
-			else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.GILDED_BACKPACK, false)) e.setCancelled(true);
-			else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.BOUND_BACKPACK, false)) e.setCancelled(true);
-			else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.VOIDBAG_SMALL, false)) e.setCancelled(true);
-			else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.VOIDBAG_MEDIUM, false)) e.setCancelled(true);
-			else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.VOIDBAG_BIG, false)) e.setCancelled(true);
-			else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.VOIDBAG_LARGE, false)) e.setCancelled(true);
-			else if (SlimefunManager.isItemSimiliar(e.getCurrentItem(), SlimefunItems.BOUND_VOIDBAG, false)) e.setCancelled(true);
 		}
 	}