Girl Scouts don't wear neckerchiefs so they don't need slides. However, they have S.W.A.P.S. - Special Whatchamacallits Affectionately Pinned Somewhere. Actually, that makes SWAPS better than neckerchief slides because you can only wear one neckerchief slide at a time but as many SWAPS as you want! If only I had had girls!
Many of the crafts on this site can be easily adapted for SWAPS just by replacing the PVC ring with a pin.