Guesstimated the Oakland Athletics logo onto an ornament to give friends for the holidays, could probably be scaled down for a keychain as well though the multi color aspects might be difficult at small scale
Design is intended to change filament colors once you finish filling in the disk so that you have a different color border around the lettering and then a third color for the letter infills to really make it pop.
I've included parts with solid lettering if you don't want to deal with the border colors, and a part where the outer border (ring) is separated so you can customize that color if desired.
Printed on Prusa i3 MK3 at 0.15mm layer height, 20% infill, no brims/skirts or supports. Back piece was yellow PLA then white PLA once the disk was entirely filled in, letters were green PLA.
Entire thing came out a little larger than I originally intended so scaling down to 75 or 50% might be a better fit for trees. Letters were a perfect fit as-is though, not sure if scaling might affect that?
Yellow, White, Green