I scaled down and modified the original to include a couple of holes in the back for mounting. Printed at the scale provided (45mm tall). I use standard straight pins for cork board mounting or 3mm x 10mm magnets, when needed. I've scaled this down further and it prints well. The horn has been modified a little as well, for additional strength at this scale.

I use this model to test and display all of my PLA, PETG and TPU filament samples from subscriptions as well as all new rolls I buy. Printed with the following settings, relatively little filament is used and I still have plenty from the sample spools.

.2mm layer height 0% infill 2 walls/perimeters/shells 4 top layers 8 bottom layers (to avoid infill transparency) Ensure vertical shell thickness (if applicable) Seam position is aligned (actually, painted to hide it) No support or raft