Another aspect of barrettes which makes them fun to do is that they are good for using up 'odd' or singleton focals, and a few accent beads (not enough on their own to make a full project). And then, the back of one's head is a great place to display one's work too (I do have fairly long hair)
Anyway here are the completed ones:
All but the green one have button focals. I think the next one will use one of the luna cabochons I bought at the last bead fair I visited: I got there a bit late, and had a limited choice and only odd ones. Perfect for this kind of thing!