My planned trick for during the Christmas meal.
let anyone who wants to, shuffle the cards,
I take the cards and deal one to each guest,
They write down the card they have (pen and paper supplied),
cards are returned to the top of the deck,
I shuffle the cards a few times,
I deal from the top turning the cards face up and the first 6 cards all match the cards that the guests had written down.
The guests probably think it's an ok trick but they know it's a bit of shuffle trickery so they're polite but not over impressed.
They think the trick is over, (it's not)
I collect the cards up and place the pack on the table
as the meal comes to and end I ask them again to shuffle the cards
and place the pack in the centre of the table
I ask them to find the cards in the pack that they had written down earlier,
they can't, the cards are gone.
I ask them to look under their placemats and each guest finds the card that they had chosen earlier.

I've never tried this before but here's hoping.