>>5293513Those weren't even the worst Ideas I had. I also attempted to use some lego rubber bands I still have on that gray thing that holds rubber bands in the lego boxes. I assume they are from a set, and with two wraps they kinda fit on a head. If they were above the eyes they would roll up and off the head. I have seen bands used on brickshelf and they seem to get them in place fine. Anyways, here is three more ideas. From left to right: The CMF rope bundle, a castle banner that requires you to look straight on at the head, and a bandanna.
>>5291242If you are ok with using a head with some printed hair, I'd go with that and a pirate bandanna.