It's kinda wide so it would need two small buttons w/ two holes I think. The ends may get flappy otherwise. What do you think, if you can tell from the picture?
But I think I like the button idea best. I just need to find the time to learn how to knit buttonholes. I LOVE buttons, especially vintage ones. I also adore steampunk. So I have a nice collection of both kinds of buttons that I've never used - I bought a nice bulk of them on ebay for dirt cheap last year, and I can barely sew! Silly I know. So, now that I remember this (thank you for reminding me) I think I may just do buttons with holes. Now it'll take me ages to decide on which buttons! lol