"Tin-Can" telephones

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For Cubs and older. Making tim can telephones with plastic cups (can use tin cans for scouts)


Plastic cups (NOT Styrofoam) OR Clean tin cans with no sharp edges
a sharp needle OR hammer & nail


1. Punch a hole in the base of the cup/tin. This should be as small as possible, Just enough to pass the string through
2. pass the string through the bottom of the cup/tin & tie a knot. tieing around a small piece of toothpick makes a stronger knot that will not come back through the hole
3. repeat with second cup/tin
4. Place one tin/cup to ear, other cup/tin is spoken in to by a friend. Make string tight as you can.
5. Marvel at the mircacle of sound waves


  • communication
  • telephone
  • tin can

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  • Communicator - Message