Hypnosis Downloads.com | Online Self Hypnosis MP3 & Hypnotherapy Scripts Center
This site sales 100's of hypnotic downloads and physical and each title is a potential niche.
You have to do some research and use a little common sense but there are some real gems hidden here. (don't forget to click on the more link at the end of ever niche.
Plus for each niche idea you get a built in product because hypnotic downloads has a great affiliate program.
They 35% on all downloads or %25 on all shippable products plus 5% on the 2nd tier and they have a 365 day renewable cookie.
They even have a growth area where you can earn recurring commissions
This is one of the many great affiliate programs on the internet for those willing to search.