I can think of five ways off the top of my head, but they're all too cliche, so let me think for a few minutes while I grab a drink . . .
Okay, I take your lipstick and wire a small explosive device into it so that it will active with a five second delay when you adjust the lipstick so I blows your head off as you apply it. (Maybe a little cliche, but not as much as the poison lipstick that is in half the spy movies ever made.)
Wireless computer mouse.