A couple weeks ago, we went to a bubble demonstration at the library. We really enjoyed the show and since there was a small crowd Professor Zap put each kid there in a giant bubble. I was very disappointed to not have my camera with me so we caught up with him at a different library. The second demonstration was packed and 1/2 of the moms there stood in the hall so I had low expectations of getting a picture this time. However, after the show, if you were willing to wait your turn, Professor Zap would put you in a bubble, his handle even broke and he kept going! Needless to say, we're big Professor Zap fans now. 
