This series of ideas is about voidcraft-related modular armor equipment. You can always change the values if you feel they are unbalanced.

Void Generator : Siphon energies from the Void. Small 1x1 Equipment that generate 45kW. There would be a bigger 4x4 variant that generate 1000 kW.
Those would be roughly equivalent to Portable Solar Panel and Portable Fission Reactor respectively.

Void Batteries : Basically a better battery. Uses a lot of voidgems.

Void Roboport : I am unsure if this is possible, but the Void Roboport would consume electricity to generate Void Construction Robots instead of pulling them out of your inventory.

Void Nightvision : Tint your vision a cool purple.

Void Shield : Faster recharge speed, but takes more energy per HP.