Supplies Needed:

• 2 cardboard tubes
• masking tape
• sharpened pencil
• 2 rubberbands
• Pom pom or tape ball.

The video at right shows the launcher in action. If the video won't play, click this link.

Assembly:

1. Cut one tube down the full length (if you got a kit from TinkerSpace, this may have been done for you). Use masking tape to overlap the edges and make a tube that will fit just inside the other tube. You want it to be able to move freely, but not leave too much of a gap.
2. Poke two holes at one end of this new (smaller) tube that you have made. This will enable you to slide your pencil through. These holes should be about 1 inch from the open end of the tube and roughly opposite each other. If you received a kit from TinkerSpace, these holes may have been started for you.
3. Cover the other end of the new (smaller) tube that you have made with tape to give you a flat surface from which to launch your pom pom.
4. Poke two holes on one end of the other (larger) cardboard tube. These holes should be opposite each other and about 1/2 inch from the end. If you received a kit from TinkerSpace, these holes may have been started for you.
5. Attach the two rubberbands to the larger cardboard tube, one through each hole. See photo below if you need  help.
6. Place the smaller tube inside the larger tube and loop the rubberbands around the pencil (which is through the holes in the smaller tube). See the video for a demonstration of what the final toy should look like.
7. Test it out.
8. Once it is working well, decorate the launcher to your taste.