Ratchet Spinners
I made the shoulder bigger on my favorite Williams ratchet spinners.
1/4 inch https://a.co/d/7iOpM6d
3/8 inch https://a.co/d/cpXEgAI
I've been told these are also sold by snap on (not tested):
3/8 FRS70A
1/4 TMS70A
Instructions:
Print at high infill and press on to the ratchet with a socket and a vice or use knipex pliers wrench.