A rope bracelet - reminds me of making friendship bracelets back in the day. My right second toe used to go numb because I'd hook the end of the bracelet over it, and then knot embroidery floss for HOURS.
Would love this for when I'm working and can't wear gloves. Can't work camera dials with gloves on! Crochet fingerless gloves - no pattern, but looks very easy (double crochet ribbing on wrist, single crochet on hand)