I wanted a simple 8647 Keychain.  This was quickly made in TinkerCAD.  I wanted to print it as 3 colors and be flat.  You'll have to break them into separate objects if you want to color it (or use the attached 3mf file which contains 35 keychains).

Nothing special here but no one else had one up yet.

I'm in the middle of printing another project at the moment, so I haven't printed these yet but my slicer reports 81.02g White, 5.09g Blue, and 5.96g Red for printing 35 of these guys and estimated just over 5 hours to print (Anycubic S1 Combo).

36mm x 4mm disc with a 5mm hole.