Writing letters with hidden messages using lemon juice
Paper, Lemon Juice, Pens/Pencils, Cocktail Sticks, Teabags, Candle
1. Take a cocktail stick and dip into lemon juice
2. Write your hidden message and allow to dry
3. Write your visible message with pens/pencils
4. Once completed, stain paper with a wet teabag and allow to dry (to give that aged looked - this can be skipped)
5. Gently move letter over the lit tealight being careful not to set fire to the paper to reveal the hidden message.