I sell my artwork on Red Bubble under my professional name. You can see my portoflio here.
Anything can be ordered from postcards & stickers to full size canvases. I haven't enabled printing on clothing yet but I'll make it available soon! Also on the way will be iPhone cases :)
Here's a preview of my quirky Wowl series...
|Get Out of My Tree!|
|Where are all the Wowls?|
|Full of Wowls|
If you're a budding artist trying to get your work out there I would definitely give Red Bubble a go - it's incredibly easy to sell your stuff and templates are available for the tricky things. There's quite a community spirit too and you promote your work as much as you wish.