I make these coins almost every week to give to kids in Sunday school at church.  Whoever is the teacher that week, sometimes me, can decide to give it to any kid for any reason.  I usually give them out for memorizing a Bible verse, leading the class in prayer, knowing Bible trivia, or whatever the Holy Spirit leads me to that week.  The kids love them.  The other teachers love handing them out.

One side is the week's design.  The other side is the logo of our church, One Life Church.

Printer: Prusa Core One

Filament: MatterHackers ThriftyMake PLA+ Gray

Layer: 0.1mm

Nozzle: 0.4mm

Supports: definitely

See .3mf for all the rest of the settings

I print them standing up because it can be double sided and the details come out much better.  Supports are a must.  They come off easy enough.  If there is a little that sticks I just clean it up with a knife.

If I had a 0.2mm nozzle it would probably come out even better.  I'm still impressed that they come out as good as they do.

I even used to print them on an Ender3 at 0.12 layer height and they came out good.

Feel free to blank the logo side or put your own church logo on them.