If you love to build many ebay affiliate stores such as using the most popular script BANS, you will need to have many new fresh niche ideas to do your research. There is one page which I visit everyday for new ideas.

Go to http://www.squidoo.com/squidbids/hq
and scroll down to the bottom of the page. You can find many new ideas and weird items being sold on ebay. Keep building and increase web site traffic.