I was never sure of the best way to close a bracelet when I started making jewelry. Bracelets can be tricky, since you've got to work the clasp one-handed. One of my favorite purchased bracelets has a magnetic clasp, and I always thought it was genius, but I never thought to look for magnetic clasps for my own work until more recently.
And when I did it was miraculous. I found these magnetic clasps at Beadaholique - there are a number of finishes and different sizes, etc. They make me so happy. They are a neat, clean finish to keep the focus on the bracelet, plus they're super easy to open and close one-handed, but strong enough to stay closed while wearing. Definitely my favorite go-to bracelet clasp these days.