Stone Anticovers and Jacketed Wire/Cable/Bluewire.
</div>They can be crafted by placing Hollow Covers, Panels, Triple Covers, Slabs, Cover Slabs, and Triple Panels of the same material into the crafting grid in such a way that their combined thickness is at most equal to that of an Anticover (7/8ths of a full block). Jacketed Wire, Bluewire, or Cables can be placed inside them for an almost seamless wiring setup.
Hollow Blocks can be crafted using a large number of different combinations of other Hollow Blocks. Any combination of the Hollow Blocks below will work, provided they add up to at most 7/8, and all materials used are made of the same material.