Perhaps you have already hear from this video. Made by graduate students and recent alumni of UC Berkeley, it shows some safety rules at the laboratory using puppets.
I hope you enjoy it, I work at a laboratory and have sent copies to most of my colleagues at the lab. Everybody agrees that it is great.



They have another video explaining nanotechnology. For further information, visit http://www.thesoundsofscience.com/index.html

I found this information in a Spanish puppetry web http://www.titerenet.com

Thanks Jorge.............. Had to insert this video
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https://youtu.be/WZ-1lfammjk

That is very fun.  I think it gets the point across but with humor.  I love that it is like a musical and breaks into "fantasy" at the end.