Sometimes you wanna know at a glance whether or not your fans or spinning, and these "spindicators" are perfect for that. Inspired by the designs found on airplane engines, these little swirls are a charming and delightful addition to any fan.

I recommend making these using a vinyl cutter using the dxf file, but, you can also print them using the stl- just make sure they're thin!!

Vinyl ones can just be stuck on like a sticker, but with 3D printed ones you might have to use some glue.