Not a Backpack (Sticky Chest)

Kind of an “early” game Shulker Box. Backpacks have been in discussion for years and yet the game’s developers have never included it. Thankfully the Shulker Box mechanic is now on the game and finally allows us to transport our items. But, unfortunately we can only get it after defeating the Ender Dragon. The idea of Backpacks, the same way as they work on mods seems to not fit in vanilla Minecraft, because usually such game mechanics are provided with creative and unique blocks. So what I suggest is: STICKY CHEST - If you break your normal chests they will drop the items inside them. But what about using some slime to make it sticky, so it will keep the items inside when broken!; - Not so early in the game, but not as late as getting to the End; - It can have some inferior performance than a Shulker Box! (durability, less inventory space...); - Simple crafting like 8 Planks around the grid with a Slime Block in the middle. Hope you like it!