Oh, both. maybe spats too.

I went so far as to design a set of earrings that would communicate with other similar earrings via optical networking, once upon a time, thinking it was a fantastic business plan: if you can get a bunch of kids to wear them, and they all start flashing in synch in a club, how totally cool! All the kids would buy them! Alas, that was somewhat before I could make them small enough to actually be wearable. Now, perhaps.