Put a player head on an ender chest to use it with hoppers.

The items will go into/out of that player's ender chest.

Watch the video to see it in action:

What it can do

1. Replace water streams with wireless item transport

2. Request items from anywhere with simple item filters

3. Create a mail system to send messages and items on a server

How to use it

Download this repo and place it in your world's datapacks folder.