Geting your personal design vision to market...
...for the artist in all of us. You too can get your product to market. Here are a few examples of the different things people are doing to get their personal design vision to the masses.

MonoOne.
This is a site built around just this very idea. The products are designer furnishings that can be fabricated from a small shop. Despite this they have created several unique and desirable objects. Originally the site was Built To Order, but now they seem to be keeping backstock.

You Work For Them
Designers selling design to designers. Increasingly there are more sites fashioned around the idea that designers are consumers of design and that other designers, in the know, have an obligation to sell to them. This is also tied into the "designer as author" idea that came out of the late 1990's (Émigré the exception). YWFT has a nice section of art pieces that really makes this site more then just another retailer.

Threadless
Here you can submit your own tshirt designs and have a chance to have your design produced for others to buy and own and wear on their stinking naked bodies.

Of course there is also eBay
As a frequent reader of design weblogs, I have run across the blatant plug. "Ohhh ... friendly critter-creators Jeeto are selling a small amount of Artist Proofs from its personal collection on eBay." (The ebay link was unavailable at press-cs). Artists selling their excess inventory or deciding to move some product with the help of auctions and the weblog community. With the right "press" they can get a lot of traffic.

dedass
Of course you can sell things yourself with a little effort and ingenuity. Yahoo store is one way to cheaply start selling your product right away. They provide design templates as well as card services so you can accept credit cards. Dedass shows their chops by making a sister web site iamdedstore that shows off some of their one-off t-shrts and posters. Warning iamdedstore works only in IE.