Try PK magnet with gaffed coin, then use the Raven to vanish it and they won't have time to examine the gaffed coin. I think I just failed your challenge. Booo.

Does a M.H. Finger Chopper happen in their hands or too their hands?

Now you've got their undivided attention. It gets a strong reaction whatever the outcome. You hardly ever get asked to, "Do That Again!"

I do it with them pinching a bill between their trapped index finger and their thumb wrapped around the side and holding the bill. If I fail, they get to keep the money. They've signed a comedy waiver by now.

If you're sadistic, you can drop a rubber finger at the right moment.

Mm, I figure the finger chopper isn't as impromtu as this thread wants, but I guess that would be a different level of magic. As it happens to the lay person, but it doesn't happen 'in their hands'.

(Unless you mess up the finger chopper bit, and the finger lands in their other hand.)

Silver extraction, and bent copper and silver transposition

Arm twister. No gaffs, audience participation and looks impossible. All you need is your own arm.

In the spectator's hands? Twisted Palm luke jermay actually is the spectator's hand, you could try PK touches on the hands, or there is a new haunted matchbox routine just come out. Check it out.

It is great as the matchbox is instantly inspectable and comes with a card to matchbox routine I think. Don't quote me though.

I use a matrix routine.

tom

The last coin for coin's across or all the coins, crazy man's handcuffs, copper/silver transpo, ring off cord and rope thru spectator's neck, alright the last one doesn't really use their hands.

Make disappear a coin at the moment you place it in their hand and reappear under their wristwatch

PK touches. Doesn't even require two hands.

The incredible linking paper clips. Also do Crazy man's handcuffs by having the spectator hold the "prison". Ok, now why isn't it called Crazy man's prison escape?

Might not happen in the hands but can be done on the cuff. Coin thru cloth napkin, butter knife thru cloth napkin, paper napkins over the head ala Slydini. All kinds of things you can do with the stuff on a restaurant table.
Ray

On "Darwins Encyclopedia of Thumb Tip Magic" Gary Darwin I believe his name is, actually makes a silk vanish IN THE SPECTATORS HAND! He sneaks the TT in their hand, and does the vanish. Talk about risky!