Okay, I'm playing Monkey Island 2, the easy version, on SCUMMvm. I'm at the endgame. I've got all the ingredients for the voodoo doll except LeChuck's hair. (Note: I've beaten the regular "hard" version already.) So I've tried the elevator trick. And it doesn't work. There's a box on the elevator that seems to be weighing the elevator down. I can't move it. So how am I supposed to get LeChuck's Hair?

Get a baloon, get surgical gloves, fill them all with helium then in the lift when LeChuck appears close the door on him.

(I forgot how to do it at one point)