Zubbles
I ran into these at some byway of the Internet and thought that I had posted about them.
Jen corrected me on this so here it is:
Zubbles
And here is a fascinating 12-page article on them at
Popular Science
The PopSci article goes nicely into the chemistry and the inventor's almost-rans that lead up to a successful product. You are looking at a picture of a bubble that is colored. If it hits you, there will be a spot of color left behind. You have three options -- hit it with a bit of water - gone, rub it - gone or let it sit in the air for 30 minutes - gone.
The chemistry behind this is awesome.
Posted by DaveH at December 26, 2005 11:44 PM