There's no doubt about the fact that lil ones like to build. Give them blocks, pillows or even sugar packets at a restaurant and within minutes they have created a castle, a skyscraper or the biggest monster they've ever seen. Encourage their building obsession with Magic Nuudles ($5), a bag of biodegradable Styrofoam-looking pieces that can be stuck together to build towers or create art projects. Made from cornstarch, the pieces simply need to be wet with a damp washcloth and then pressed together. They can stick to paper, glass, wood, or each other allowing your tot to be as creative with their use. When you are done playing, just place them in the sink, run some water, and watch them wash away. Great for a rainy day, Magic Nuudles make a great activity for playdates.