Spiro-Coasters

thingiverse

Create Spirograph-shaped coasters and holder for cups, glasses, beer, or wine using this printable design. Make them glow-in-the-dark ABS for easy location at parties. The holder can accommodate up to six coasters. For a two-color print, try the version with a thin back. Additionally, there's a domed option that may work as a speaker cover but could confuse drunk guests. Follow the printing instructions provided in the link.