Conjure items from nothingness using energy and a bit of magic. Or sufficiently advanced technology, who really knows?
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
New Ores and resources as well as machines.
Things related to oil and other fluids.
Furnaces, assembling machines, production chains.
Just an heads up, but Voidcraft and Void processing had an incompatibility due to the same science pack. I fixed the issue by renaming my science pack.
Just FYI