I love the idea of a secret message. A little love note, invisible until brushed with crimson watercolor. Magic for little ones, exciting for adults. (I got the idea after seeing this post on Creative with Kids.) This is a simple little project that would work great for all manner of greetings, not just valentines. In fact, I'm certain this won't be the last wax-resist watercolor project around here.
Secret Message Valentine
Watercolor/thick white paper
White crayon or birthday candle
Watercolor paints (liquid ideal but optional)
1. Draw a small heart on your paper with the crayon and fill it with water color. Liquid works great, but a very thickly painted heart of regular crayola watercolors does the trick. Allow to dry, it takes a few hours. (You can of course skip this step and simply present the page along with a palette of watercolors.)
2. Pressing really hard and making fairly thick lines, write your secret message with the crayon or candle.
3. Present your valentine with a brush and some water.
4. Watch the magic happen. Secret love, revealed!
In case you missed them, here are two other valentine projects you might like:
Birdie Valentine: a bird seed cookie recipe and free printable
We Go Together Like: a free and funny last minute v-day card printable