Alright. Here's the plan. Someone flies to HK. Buys a gross of these little buggers. Loads them up in a series of boxes. In each box: We include a helium balloon. Yeah.
Then the box floats.
So it goes to the P.O. Yeah. . And we put it on the scale.
P.O. employee: "Uh. . -2 lbs."
Sender: "-2? So you owe _me_ money, right?"