Wouldn’t it be nice if there were window screens that acted as air filters? Or something that could be added to a flat liter of pop to add fuzz back in? Or if there was a restaurant that catered to singles with children? These innovations and inventions (and many, many more) can be found on the Creativity Pool, a global database of original ideas. It functions like the penny jars by cash registers: If you’ve got an idea, you can submit it to the Web site (and be rewarded if someone else uses your idea), and if you’re looking for a solution, you can browse the pool by category, or comment on others’ ideas. The goal of the site is the "realization of ideas," a call to stop wasting our collective creativity and collect all the unused ideas ordinary folks think of every day.