60 degrees are what are used for Hexes among other things. I've used it for a clown hat, but that's probably just me on that one.
If you do a search on 60 degree quilt ruler patterns you will find many more ideas than I have.
Edit: Sure, you can do a One Block Wonder without one... but it's better with!
Last edited by Iceblossom; 02-08-2020 at 07:46 AM.