To make a hot air balloon by hand, the materials to be prepared are: hydrogen balloon, cup, toothpick, scissors and ribbon.

First, prepare a hydrogen balloon.

Second, then drill two holes in the paper cup.

Third, use both ends of the ribbon to pass through the hole of the paper cup and tie a knot to fix it.

4. Then tie the middle part of the ribbon to the hydrogen balloon.

5. Put a toothpick in the paper cup to increase the weight. At this time, the hydrogen balloon is in a state of landing on the table.

6. Slowly take out a proper amount of toothpicks, and the hydrogen balloon will slowly float in the air, and the hand-made hot air balloon will be completed.