I also used them for a waiting room activity for my newer students by also making use of Susan Paradis' fun Ornament Bingo. Rather than play it as a game, I just had them work at getting the right gem on each keyboard ornament. They really liked this activity and it kept them quiet for just the right amount of time!
I also made these Musical Alphabet Ornaments with the intention of using them for my magnetic staff boards. I thought it would be a fun Christmas twist rather than using the plain black notes I usually use.
You can read the original post I did on the magnetic staff boards here. What fun activities have you been doing lately?