rubber bands used to hold rolled up spine board straps the fire/rescue dept. would use medical tape but the residual adhesive would remain on the straps and could cause a bio hazard
Flimsy rubber bands are often used in tie dying kits. We tie dye at least 2x a year and every summer in Maine. We always buy other rubber bands often at Staples for use the difference in thickness makes it help make our tie dying a bit more interesting. The prices were great for us this year!