Warning!

When printing the holder part, rotate it so the flat part is facing UP! The slicer struggles with circle-shaped overhangs. You don't need to put supports because the overhang can function as a spring to keep the token in place. But if you prefer nicer looking inside you can print with supports.

The main advantage of this design is that you don't need to attach your keys to the cart because the token detaches from the keychain easily. 

There are three designs of tokens and one without a design.  If you want to make your own token design, use the following parameters:

Diameter: 24.5mm

Height: 2.55mm

Feel free to submit your designs, I would love to see them!

If you print this model, I would be really happy if you could spare a few minutes to submit a model.