Pacific Command Poker Chips
Osprey Games' Pacific Command provides an excellent way of abstracting the hide and seek action of naval warfare in the Pacific during WWII. It does so through a mechanic of poker chips, some with writing on the bottom. Personally, I can't write neatly enough to be happy with the results. I used the Chip_Blank.stl from czehe (so he/she/they gets most of the credit) and labeled the bottoms with the Gambits and Task Force numbers. The basic blank chip is used for everything else.
When printing, I printed a thin layer of white on the bottom to make the writing easier to read. This is optional of course.