Google gave me $10 to sign up for their Checkout service. When I was done, they presented me with a list of suggested stores, including quite a few useful ones, and then many, many dotcom failure stores. Examples below. I think I'll just get some cat toys, which is what I did in '98 or so when pets.com gave me $10.
http://www.holepunch.info/ http://shop.beautysurg.com/ http://www.alpacadirect.com/ http://furhatworld.com/ http://www.grabbarspecialists.com/ http://www.nuttybug.com/ http://www.fogdog.com/home/index.jsp http://www.handdryer.com/ http://www.findtape.com/ http://www.stacksandstacks.com/