Material preparation: plastic wrap tube, CD-ROM, wooden buckle, disposable chopsticks, leather band, buttons, straws, paper clips.

Steps:

1, paste the wooden buckle and the CD-ROM together, and paste the button on the other side.

2, all four discs are done this way.

3, Paint the cling film tube with color and punch the holes.

4, With the help of a leather band, punch four symmetrical holes in the front and back of the cling film tube.

5: Insert disposable chopsticks.

6: Cut the straws short.

7: Put them on the chopsticks.

8, and then install the tires made of CD-ROM, all four tires so installed.

9, ready to the appropriate length of the leather strap.

10, from the plastic wrap tube to the chopsticks, tighten the band.

11: Put a paper clip on the other end of the band.

12.Then let the paper clip carry the band through the plastic wrap tube and out the other end of the tube.

13: Snap the paper clip onto the wall of the plastic wrap tube.

14, a rubber band-powered cart is finished.