Sandlog

Use 1 2 3 4 to switch the item to your hand.

For some items, if you press it, you can interact with them.

There's a web blocker; it breaks for me when compiling.

Generally, it's more correct to call it a "client" so it charges and places a dense block, similar to a battery, nearby. Then, block energy from the batteries to charge the battery, and thus the "client" works.

Item 1 is a pickaxe, 2 and 3 are weapons, and 4 is the item used to obtain blocks.