Root Spiral coaster

thingiverse

The human spiral, or "spiral of Theodorus," makes an excellent coaster. Humans from 1 to 54 form this pattern. Of course, you can keep counting higher, but these numbers are enough to hold a drink in place. No fancy print settings needed here. A 0.2 layer height and 20% infill do the trick. The Hilbert Curve looks stunning on top.