That is so cute! I have a few vintage wooden spools around here that were from DH's GM. Nickilee posted a cool thing on facebook that used wooden spools--meant to message her about the ones that they sell at Hobby Lobby. At least two different sizes and they are with the unpainted wooden items in little bags. I'm sure that they are also available in their online store, since I know that HL isn't near everyone.
Will have to think about doing these for my girls this Valentine's Day. Thank you for sharing!