A running car is made by hand by using the characteristic that the balloon will contract and deflate after inflation. We need to prepare four wheels (with shafts) of used toy cars, a disposable chopstick, a used ballpoint pen and 502 glue. Our production idea is to let the gas in the balloon spray out of the ballpoint pen sleeve, and under the impetus of the reaction force, generate power to drive the car forward.

Production method:

Connect the front and rear wheels with disposable chopsticks; Unscrew the ballpoint pen, take off half of it (that is, the part where the pen tip is exposed), stick it on disposable chopsticks with glue (it is best to add a small cushion between the pen tube and chopsticks, otherwise it will be difficult to install balloons), inflate the balloons, install them on the pen tube, release your hand, and the car will run automatically!

Second, homemade soap paper.

Production materials and tools:

White paper with good water absorption, small pieces of soap, writing brush and disposable beverage cans.

Production method:

Chop up the soap first, put it in a jar, put a proper amount of water in it, heat the cup on the stove, and when the soap melts, cut the white paper into the size of a matchbox, coat it with soap one by one, then take it out and dry it in the shade, and you can make soap paper.

Third, handmade paper cups and small desk lamps.

Required materials: paper cups, second-hand pens, glue guns, scissors, cotton cloth, lace and white latex.

Production method:

1. Wrap the paper cup with cloth, cut out a suitable rectangle, and stick the cotton cloth on the paper cup with white latex.

2. Trim the upper and lower ends of the paper cup neatly, then coat it with white latex and lace.

3. Cover the cotton joint with acrylic pigment of the same color. You need to paint one layer at a time.

4. Cut off the tip of the waste pen with scissors and take off the red cap at the back.

5, glue gun heating, stick the upper and lower ends of the pen on the cup and bottle cap respectively, and the paper cup becomes a small desk lamp.

Fourth, the compass.

Take a piece of plywood and saw out a bottom plate with a diameter of120 mm. Sandpaper surfaces and edges. Mark the symbol on a piece of lead drawing paper, cut the disc according to the size, stick it under the chassis, take a pin or sewing needle, pass through the center of the back of the chassis, and expose the tip of the disc as the shaft.

Cut a piece of tin foil into the shape of a pointer according to the size, drill a hole with a diameter of 2 mm, and fix a button on the pointer. Touch the pointer with a permanent magnet several times to magnetize the pointer. Finally, put the pointer on the axis. Pay attention to which end points to the north and color this end red.

Five, waste plastic bottle decorations

Take a coke bottle, remove the bottom cover, and cut off the part 2/5 from the bottom of the bottle with scissors. Pay attention to keep the width of 1.5 cm as the handle of the flower basket, and cut the remaining 3/5 into strips to reach the bottleneck. The width can be determined as required. Then turn out the plastic strip and stick it on the bottle cap, and the flower basket is finished. Put some flowers in the basket, it will become a very beautiful ornament.