Bling in the fish tank

I had one of these fancy old thermometer's in a glass tube. where the temperature floats on a little glass bulb. Well I knocked it off the back of my desk and it broke. The little floating things did not break.

So what to do with it? Out came the beads and here we are with tank bling. The fish really seem to like it. they play with the beads. The current moves them around and they seem to enjoy them.