I recently had the pleasure of working on a logo for a very talented textile artist and one of the specifications for the logo was that it needed to work well on a 1" round pin. Apparently attendees at a quilt convention named "Quilt Con" exchange custom pins, sort of like visitors do at Disney World. Here are Ph.D. Stitchery's pins in all their glory:

If you're on Instagram and interested in seeing some of the other artist's pin designs, search #quiltconpinswap.