Fidget Rolling Marble Pen Holder

Added 2026-07-13

A pen pot wrapped in a spiral marble run: drop a marble at the top and watch it wind down to the basin while you think. Optimised to print cleanly without supports. Marbles not included. STL and 3MF on Cults3D and Thangs.

Print specs for this model aren’t published yet — check the store listing and the maker’s notes there before printing.