As a supplement to my suggestion to Gap that they offer a way for people to design their own apparel, I have discovered several companies that are offering customized product opportunities.

Two behemoths in the shoe industry, Nike and Reebok, have both recently launched sites that allow consumers to customize shoes. The Nike ID and RBK Custom websites allow you to choose a basic shoe type and select colors, patterns etc. Cool!

Snowboard product company Burton also allows consumers to design their own board. You can choose from almost any board in their current lineup, select from 13 graphic themes, and have a message printed on the base. Retail price: $900. [Thanks, Scott Kobayashi]

Another interesting company that’s gaining traction in the consumer designed product space is Zazzle.com. The Company is backed by Kleiner Perkins Caufield & Byers, and allows you to create your own stamps, t-shirts, and customize other products. According to Forbes, since the site began promoting itself in July, sales are up six-fold, and Zazzle expects to turn a profit on $20 million in revenue this year.

Creative product designers can also create and sell goods via Goodstorm.com, a company that ships the product, and collects the money for independent creators. What makes Goodstorm different from Zazzle.com is that they specifically target non-profits and donate a portion of its profits to charity.