My half of an art trade with gypsies on FA!
She said in another post that she liked balloons, so I went with the most cliched balloon-related thing I could think of.
Got sorta bored at work so I did some lifting gas calculations along with the volume of a balloon (excepting to weight of a balloon because I didn't want to make too much math) and found out that to lift a 200lb person you would need about 18,000 party balloons.
So uh, just pretend there's another couple thousand that conveniently go off the page.