This is a Glowbubbler in action. To simulate the actions of a little toddling bubbler, I placed the bowl up on a chair and chugged two cups of fresh-ground, fresh-brewed coffee with extra sugar beforehand. To learn how to build it, see my article at the Soap Bubble Wiki: http://soapbubble.wikia.com/wiki/User_blog:Glowby/How_to_Make_a_Glowbubbler
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How To Make a Glowbubbler I sort of stumbled across idea when I was searching the dollar store...