Summer crafts

Hi Everyone!

I have been working at a summer camp in California for the last 5 years and have loved every moment of it. I am currently the Art Director and wondered if anyone had any knowledge of where to get camp supplies in bulk. Specifically friendship bracelet threads (Embroidery Floss) or an alternative to them as I have only ever been able to find it in packets of 150 skeins which seems to disappear in a heartbeat at camp!

Thanks!