1. Get two tin cans. (Mandarin orange cans are ideal while tuna cans aren't ideal)
2. Take off any labels, stickers, etc.
3.Drill a hole in the back side, just big enough to fit some string.
4.Put a string in through the hole.
5.Find two paper clips.6.Put the paper clips in the the tin cans.
7.Tie the string to the paper clip. (Tie it tight)
Set one tin can in one place and the other tin can in another place.