Two sites I've learned about that could lead to a paycheck.

One site is http://www.quirky.com.  Basically, you can submit an idea (which costs $99) and hope it wins, OR you can vote on others' ideas or come up with names, taglines, or logos for them.  This could lead to a percentage of the sales, if the product goes into production.  The more involved you are, the more of a chance you have in making some cash.  Here's a referral link.  http://www.quirky.com/?r=0d9be98aecc21e360c234790423f6259

The other site I just learned about is http://www.appswell.com.  If you have an idea for an iPhone app that no one else has thought of, and if everyone loves your idea, then you have a chance at $1,000 and royalties.  You can register on their site, but you need to download the iPhone app in order to submit ideas and vote and comment on others' ideas.  I just submitted an idea called, "My First IQ."

Good Luck, fellow Dads!