Paper Cup Balloon Rocket: Cut a piece of tissue paper or balloon into a long strip, tie one end to the bottom of the paper cup, and fix the other end to the blowpipe with adhesive tape, then blow air into the bottom of the paper cup, and the paper cup will lift off like a rocket.

Paper cup air cushion vehicle: punch a small hole in the bottom of the paper cup, then insert a straw into the hole, one end of the straw is exposed, fix the suction port on the paper cup with adhesive tape, blow air into the suction port, the gas will be discharged from the hole, and the paper cup will slide like an air cushion vehicle.

Paper cup steam rocket: heat the paper cup with hot water to make the inside of the paper cup full of steam, and then put the paper cup upside down on a smooth surface. After waiting for a period of time, the steam pressure in the paper cup will push the paper cup upward and the paper cup will take off like a rocket.