Knitting

I have a 50-pack of brass split rings (like the one keys go on, just pretty small) that cost me like $3 at Micheals. I like them because they don't come apart like yarn loops inevitably do on me, and they were cheap enough that if I lose one I don't care.

I actually have a set of fancy ones with little dangly bits that someone gave me, and while they're really pretty, I find the dangly bit get caught in my work sometimes, which is annoying.