I designed this initiative tracker for Dungeons and Dragons (but could be used for anything really)
You can frame a picture of 62x45mm or maybe bigger scaling it a little bit. (not too much cause the gap for the DM screen will increase too).
The are 2 versions, with or without a grid.
I discover the grid version is a little too fragile but your mileage may vary.
Both versions came with or without magnet holes to use with the token provided or another kind of token you may create like conditions, rage, or death indicators.
Printer:
Bambu Lab A1 Mini
Rafts:
Doesn't Matter
Supports:
Yes
Resolution:
0.2
Filament:
Generic PLA
Notes:
Support could be a little tricky but I got the best results with Tree support, on mi A1 they just snap off like nothing.