DD's field day is coming up and they have to wear their class t-shirts (which are short sleeve), but I want to tie her sleeves up for her so her shirt is more like a tank (presuming it will be a hot day). I've seen the cute t-shirt sleeve ties on other kids, but can't find any to buy. They can't be that hard to make right? Can someone tell me how? I thinking just buying some ribbon and that's it, but how can I keep the ends from fraying?
TIA
TIA