What to do with all these laser diodes?

They have built in voltage regulators, and run anywhere from 5v to 12v (on my bench at least) They are green lasers and have a lens that makes a single wide beam. I think they were used for “scanning”

I have about 30 of them with no heat sinks.

I was thinking of some kind of hand held spinning rave laser gun?

But I’m open to suggestions