I'm looking for old mods that don't work anymore. For August's stream I want to update some, drop ideas here.
Pipeworks adds pipes that can be used to transport fluids, and pneumatic tubes that can be used to move items. This mod works great with mesecons and technic, and really comes in useful when using them in tandem to create automated systems.

More mods by this modder

The framed glass mod adds a handful of new nodes, colored glass mostly.
Replacement for Minetest creative inventory
In this mod review we're looking at the Industrial Lights mod, which adds a new light source, in several colors.
Spruce up all your builds with the great models and nodes that the home decor modpack adds.