Time by Bond Lee
A beautiful piece of magic, elegant and classy.
The magician displays a beautiful pocket watch, and asks a participant to hold on to it. The participant picks a card and the card is magically vanished. While they are figuring out where their card is, the magician tells them to open the watch, and surprise! Their card appears inside the pocket watch. Everything can be examined.
This was Bond's lecture material, now with better quality and a more realistic looking gimmick. If you want to add some class to your magic, TIME is your choice.