If you sell gifts, my site wavedancing.net is a good place to put a banner. I'll sell at most 5 banners. The banners will be on the left, which get the most exposure. The banner size is 120x60. Price is $50/mo.
The site has more than 4,000 unique visitors a day and more than 13,000 page views. It is DMOZ and Yahoo directory listed. Please contact me if you are interested.