Project:Ultimate Frisbee Clips
From CoMakingSpace Wiki
Someone on a team I used to play for had one of these clips to keep a disc on the outside of their bag when we were on a trip and I finally have the opportunity to 3D print my own.
It is useful because it is very easy to 'warp' o bend a disc when you are (over)packing a bag to travel with.
I was lazy and didn't design my own clips. Instead I have used 2 different designs I found on thingiverse.
I ended up liking Design 1 more than Design 2. The only issuse I had was that the hole for the keyring didn't fit the keyring I had. I printed it again scaled up to 110% and with the 0.4mm nozzle instead of the 0.8mm. The result was much better for what I wanted.