Solute collection

Let Copper Golems become DJ's by letting them use Music Discs and Jukeboxes

Faster Minecarts, speedometers, and rail building tools without breaking your Redstone machines or needing client mods!

Use Bars as fireman poles and Ladders as climbing rope

Purpur block + Redstone power = Teleporting elevator

A bunch of small in-world interactions that would fit right into vanilla