1, first poke a small hole in the middle of the bottom of the paper cup.

2. Cut a short straw and put it in the middle of the rubber band.

3. One end of the rubber band is sleeved in the middle of chopsticks, and the other end is sleeved on a long straw through a paper cup.

4. Wrap the rubber band several times and fix both ends of the straw on the side.

5. Draw a pattern on the side and rotate the small paper cup.