If you were a top illusionist (or magician), what mischievous trick would you do?

Answer 1

if I were really good and greedy at the same time I would make all of the money in the audience appear in a big Glass jar on stage and then let the audience fight over who gets what I would get the video rights to that one

Answer 2

I would put my hand through a glass surface and pick something up from the other side of the glass, pull it out, and have the glass remain intact.