Dh actually did try to start his own business at one point, but it actually costs quite a bit of money if it's something you need to have comercially done, to get a prototype. I'm sure you could make some good money in the long run, but you'd need to invest up front and it might take awhile to actually make any money.
Do they still have that American Inventor show? That's what I need to do!

They helped the people create their inventions and the best one actually got it marketed.