Print with PLA at 0.2 mm layer height and 20% infill.

I generated the Spotify Code here

Assembled the Spotify Code and the opener in PrusaSlicer with the >add part< function 

Used a 2 Cent Coin (EU)

Supports are not needed

Holes are for 8x2mm magnets

FYI: The Spotify Code of the picture is this song.