Worse thing you can do, they must be either clear or a solid but shiny color.
Case study: I made tie pin out of coal, I told my GF that I'm going to wear it to a wedding and she goes off her rocker like I'm going to have some big chunk of coal hanging from my tie. For the record it was the size of piece of a rice.
I'll have to try dangling shiny objects. That is a hoot. I had to muzzle mine the other night. She was chasing her tail and then came after me. Maybe I'll try treats and see if that works. I do like when she humps my leg.