This is a small command block setup that lets you have a companion Luggage ender chest that follows you around. Check the youtube video for a more detailed look.

You can try it out by just downloading the map file linked in the YouTube description, but if you want to use it in your own world:
* Download and paste in the schematic file anywhere within your spawn chunks (see below).
* Run the command "/scoreboard objectives add Luggage dummy"
* Remove and re-add the redstone block at the end of the row of command blocks.

... then click the button to get a Luggage spawn egg.

The setup needs to be within your spawn chunks, which is where your world spawn is. If you don't know where that is, break your bed and die or leave the End, and you'll end up at the world spawn. Elevation doesn't matter - so you can paste this in at bedrock level and it'll still work, provided you follow the other steps above.