Here is a parametric openSCAD program which creates tokens for games that need a marker. Shapes available are polygons with 3 through 12 sides, an approximate circle, and a rhombus. The centers can be plain, decorated, or vacant. A few simple decorated examples are given.

MakerBot

MakerBot Replicator (5th Generation)

Yes

No

0.2 mm

The markers print well on my Replicator standing on an edge with a raft.