I am constantly twiddling with necklace pendants and have a hair band on my wrist at all times, for particular use in stressful situations at work - usually involves me stretching/pulling it with gusto under the desk/out of view of others.
I would like something nice on my wrist that looks nice, incongruous but can also withstand me twanging it. Nice things tend to look like they'd break and in the middle of being stressed, I don't want to have to scamble on the floor for bits of necklace.
Any ideas?