I really like mosb1000's infinity cube (https://www.thingiverse.com/thing:3496723) and was thinking about making an infinity pyramid. You can find an infinity tetrahedron from errrr on thingiverse (https://www.thingiverse.com/thing:3516056) but this is a multi-piece design. My plan was to design a similar pyramid but only in one piece.

So, here is my design of an infinity pyramid... ok, actually here are two designs - one with a simple profile and the other one with a more complex profile. I could not decide which I liked more so I publish both and let you decide.

Both designs can be printed in one piece without support or infill. Two or three walls and six roofs are enough. The model prints fine up to 0.3mm layer height and you can scale it down to 50% (maybe less) if wanted.