Magic Trick
You can use the waterproof handkerchief trick as part of a magic act for a talent show or school recital. Place the glass of water on the table, and loosely wrap the handkerchief over the top, tipping the glass to the side so some water comes out. Then, tap the glass with a magic wand, pull the handkerchief taut and hold the glass upside down, showing that the water stays inside the glass.
Betting Trick
Use the waterproof handkerchief trick as a fun bet with friends. Tell a group of friends that you bet you can pour water over a handkerchief and not have any spills. Challenge your friends to see if they can do it. Show off by pulling the handkerchief tight, and flipping the glass of water over yourself, winning the bet with your dry display.
Party Trick
A party is the perfect situation for performing this trick, as most parties will have the glass and liquid readily available. If you're at a party and guests start showing off with party tricks, jump in and show your trick as well. Make sure your friends have their cameras ready so they can take some pics of your amazing feat.
Halloween Trick
You can customize the waterproof handkerchief trick for Halloween by making it an oozing, slimy trick. Drip a few drops of green food coloring onto a dark handkerchief. When you stretch the handkerchief over the glass of water, make sure the section with the food coloring is right over the glass opening. Then, when you tip the glass over, the water will start to turn green as it touches the fabric.