Crochet a button bracelet.

Thread the buttons you want to use onto your yarn. It's nice to have a yarn with some stretchiness to it, like some of the sock yarns with a touch of nylon. Keep adding buttons until you have as many as you think you'll need, then slide them down the yarn and out of the way. Nestle them up against the skein. Chain stitch long enough to make a strand as big as your wrist. Join to form a ring. Single crochet in the 2nd chain from the hook. Do two or 3 more SC's. Now, slide your first button up where you want it. (see photo) Grab the next bit of yarn with your hook, as if the button isn't there, and make another stitch. This will hold the button on. Make another single crochet to hold it in place. Add a button, add a SC, add a button, add an SC. When you get to the end of the round, chain 1 to step up to the next round and start a new round. Do a whole row of SC to anchor everything. Chain one, start the next row, once again doing a sc, then add a button, then add a sc. and so on. In other words, add the buttons every other row. Repeat until the bracelet is as wide as you want it. Add one more row of single crochet if you want, then tie off and weave in ends.
This bracelet has 2 rows of buttons (about 40 total).