A paper clip vanishes and appears clipped to a spectators chosen card that has been lost in the deck.
The card is selected and signed by spectator and lost the card into the deck.
You then take out a paperclip and press it on the card deck and suddenly it disappears, and it turns out to have hooked on the spectator's chosen card.
Fully examinable
Easy preparation
No complicated setup
At the ending we can give it to the spectator as a souvenir.
What are you waiting for, learn it now!