Uberstix Scavenger (Ages 7 and up)

This build-your-own Uberstix LandSailor is part of the company's Recycling Series – it's designed to integrate with found materials like rubber bands, paper clips and Popsicle sticks, as well as other toy building blocks you may already own, including Legos. And on a windy day, the toy will power itself down the sidewalk. $21.60 from amazon.com.