A collection of all the maker coins I've found here on thingiverse.
All coins in this collection have been made by Angus over at maker's muse on youtube. https://www.youtube.com/watch?v=wSBLOhIFz6s
He made a little coin he could easilly and fast test filaments with and since a lot of people have been making these.

P.s. If you also made one that I haven't added be sure to hit me up and I'll see if I can add it.