How to make a magical drawing in three easy steps:
1. Squeeze lemon juice from a lemon into a bowl and then add one teaspoon of water. Mix together to make an "ink".
2. Take a q-tip or cotton swab, dip it into the lemon "ink", and draw a special spring picture or write a special message on a piece of white poster paper (not too thick so the light will shine through it and the heat will penetrate). This will be invisible and will be your magical picture or message.
3. Hold the drawing (or message) on the paper up to a light or tape it to a window that gets plenty of sun and the drawing will magically appear.
Why does this happen? Because lemon juice is an organic substance that turns brown when heated.
If you want to send a surprise message to a friend, let the lemon juice dry but don't heat it. Send the invisible magic drawing or message to the friend and give them instructions on how to heat it to reveal your special message or drawing to them.
A nice way to celebrate spring (and friendship)!