How does the salt trick work?
You pick up a salt shaker, and cover it with a paper napkin (claiming the magic will only happen if it is hidden). You place the napkin-covered salt shaker on top of the coin, and make a magical gesture. When you pick up the salt shaker, the coin is still there. You try again, but the coin again doesn’t disappear.
How do you do the disappearing water in hand trick?
An Easy Science-Based Illusion Essentially, you pour some water into a cup and wait a few moments. Then you turn the cup over, but no water pours out—the water has apparently vanished. There’s nothing special about the water or the cup, but there is something inside the cup that your audience doesn’t know about.