The greatest products you will ever buy started as an idea in someone's mind. That person might have built it into something great. More likely, s/he sold the idea, as an idea, for a very low price to someone else, or got other people to help with it first. What you see as the best and greatest ideas in your mind today, could easily become the best and greatest things that are bought and sold in the not-too-distant future. Get busy - the world is counting on you!