1. Copyright a specific type of fabric to absorb snot the best and call it snot rag.
2. Perform an experiment by having two children and allowing only one of them to use the internet. See which one is smarter at the end of five years.
3. Strap on watermelons wheels so you can ride the mellon.
4. A toy that allows you to make candy out of sugar and berries.
5. Sandpaper steering wheels.