Make a Keyhole Spy Glass Activity

3.8 based on 55 ratings
Updated on May 9, 2013

This is a very simple activity that involves making your own spy gadget. The keyhole spy tool will allow its user to look through keyholes or very tight spaces! The result is a “fisheye” view of the room.

What You Need:

  • Clear glass marble
  • Black construction paper
  • Clear tape
  • Ruler
  • Scissors
  • Pencil

What You Do:

  1. Have your child measure and cut a piece of black construction paper approximately 4” x 10.”
  2. At one end of the strip have your child place the marble in the center of the paper and roll the paper as tight as possible.
  3. Using a pencil, poke the marble to one end of the roll until it slightly protrudes from the paper as shown. Secure this end with a piece of tape around the paper.
  4. Place the marble end of the spy tool against a keyhole or small space and look through the other area. Ask your child what he sees!

Try the keyhole spy tool in several different spaces and see what works best!

Detective Constable Jake Friesen is a member of the Forensic Identification Unit with the Peterborough Lakefield Community Police Service in Ontario, Canada. Jake is highly trained in many disciplines of forensic science.

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