Homemade bath crayons - Buy some glycerin soap at a craft store. Melt it in the microwave, add food coloring, and pour into a mold. I used an ice cube tray. Takes about an hour to cool completely, then pop out of the mold and you have crayons!
Color the Road: Shower curtain (liner) taped to the kitchen floor. The road is drawn on with permanent marker and the kids can colour to their hearts content then drive their cars on it. MAK note: Shower Curtain Liner - explore other drawing ideas.
Invention Box! Collect broken toy, appliance pieces, and other tech treasures in a box for young inventor tinkering. This encourages creativity, critical thinking, and resourcefulness. (Via pink and green mama)