lapis is intended for an easter egg, and dead air is (currently) useless, though I'm not sure what you mean by heavy weight material
Sorry, I think its called light weight material, but lemme double check. I think its the byproduct when you combine dimunation dust and salt to get diamond and the other thing. (the other thing is what I'm asking the use for lol)
its called plumes of floating
Plumes of Floating do have an in-game use!
