Copperworks

Copper becomes the base material for a set of new items and blocks, plus redstone components whose behavior varies. Among them are entity detection parts and a wireless redstone option that carries a signal without wires. The additions build on vanilla mechanics rather than replacing them, and the author describes the aim as improving the existing gameplay.

A new storage block is meant to work with vanilla hoppers and other inventory systems while allowing very large capacity, which opens a different approach to inventory management. Functional blocks are included to assist mob farms, and an endgame armor piece grants flight in the style of creative mode. The mod adds around eight items and ten blocks, which can be obtained through several methods. Copperworks is published for Fabric only, for 1.21.9, 1.21.10 and 1.21.11, and it needs both the server and every player to run it.