Spoonflower: On-demand fabric printing.
Lucretius linked me to this last night, and I've been thinking about it ever since. You send them a pattern you've cooked up on the computer, and they send you back fabric printed with your pattern.
Fractal-patterned fabric, say. Ohgodsavemenow. This is all your fault, L.
Note: Link is to a review of the service, as it's currently in beta and the site itself is mostly just a vicious and cruel teaser-site.
(Related link: http://www.kk.org/cooltools/archives/003008.php)
I have a friend with a clothing company who got invited to the beta (she normally screens her own stuff) who is ALSO foaming at the mouth, BUT will have a sample soon. Shall try to remember to link you to her eventual review!!
I AM UNDONE.