Materials: bangles; plastic, wood or metal is fine,Crochet thread; mine is metallic, and a size B crochet hook.
Make a slip stitch on the hook, then single crochet around the bangle. Continue to single crochet around the bangle, until you reach the starting point.
Slip stitch into the first single crochet, then finish off. Weave in ends, and enjoy your new bangle!
I believe the pink bangles were made using a lace weight yarn and a F hook. There are many areas to experiment; adding beads would be pretty.