Watch this purty Russian blonde heat up and blow a CD to create a giant bubble out of it. She blows my mind. OK, too many bad puns here, but a good alternative if you are short of zubbles.
I first saw this about a month ago, I can confirm it works. It's the plastic CD protector thing not a CD. You have to heat it up a lot at a specific spot (I mean a lot). The good thing is that each plastic CD thing can do about 5 bubbles, just pick really specific spots that'll give you space to do more. The bubble feels almost like grocery store plastic bag but a little harder (but it doesn't stretch it just breaks).