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Lockdown Boredom Buster - Secret spy messages with invisible ink

Calling all home school junior spies! Sometimes pens and pencils are just not exciting enough and you need to send messages or complete your homework in invisible ink. Practice your spelling and send top secret mail using these methods with ingredients you will have at home. 

Top secret mission 1 - Lemon Juice & heat

Things you will need

Lemon or Lime Juice, cotton buds, plain paper, baking paper iron or hair straightener.


  1. Place a small amount of lemon or lime juice in a small dish and soak the cotton bud.
  2. Using the cotton bud, write your secret message. Pat to dry excess liquid.
  3. Cover your paper with baking paper and use the iron or hair straighter to heat up the paper and reveal your message.

Top secret mission 2 - Baking soda & grape juice

Things you will need

Baking soda, cotton buds, plain paper, paintbrush, grape juice or strong cold tea


  1. Mix 3 teaspoons of baking soda and 3 teaspoons of water.
  2. Using the cotton bud, write your secret message with the baking soda mixture. Allow to dry.
  3. Paint a thin coating of grape juice or strong cold tea to reveal your message. 

Top secret mission 3 - white crayon & watercolour paint

I am sure we all did this one as a kid so really it doesn't need too much instruction. Simply write the secret message with the white crayon and go over it with different shades of watercolour paint. This method is very kid friendly and can used for independent play.