|Cooling necklaces filled with water-absorbing polymer crystals|
I did this project to provide cooling relief for a children's carnival at a church on Sunday afternoon in July. There are many places online where you can find directions for making "cool ties". In ASG we made them one year as a service project. Typically, for adults, you cut your fabric strip, 4 inches deep and the full selvage-to-selvage length, and drop some crystals in compartments as in my diagram from that project here..
However for kids I could envision this being used like a choke collar, so I didn't make them to tie. I used plastic snaps instead - KAM snaps from gotlux on ebay. They worked well, but if you use snaps, you have to be more precise on size. I didn't do too well on that. The crystals expanded more than I expected, which made the tubes stiff and therefore became tight, even though they were plenty loose before the expansion. I ran out of the larger ones and had some left over of the smaller ones. You live and learn.
Still, they were gratefully received and they did work! In future I will make more compartments, and use fewer crystals in total as well. They don't have to puff up like sausages to be effective.
For pictures with the 80 other ties I made of this same "pattern" (and documentation for the Fabric Stash Contest), click here and here.