IKEA has the best sock octopus, definitely.
All of my clothespins are from the thrift store. Teachers use them for classroom charts, and at the end of the year they bag them and send them on, so all of mine have names on them. Lol Some are definitely sturdier than others, but at $1/bag, that’s okay.
I also have a bunch of large plastic clothespins that I bought at a yard sale. They are nice enough that we mostly use them for bag clips.