1. Create a free ebook directory on a specific topic at your web site. People will visit your web site to read free ebooks and may see your product ad.
2. Turn part of your web site into a members only web site. Instead of charging for access, use it as a free bonus for one of your products.
3. Add a free classified ad section to your web site. You could then trade banner ads with other web sites that have free classified ad sections.
4. Create two versions of your e-zine so people can choose if they want ads included with it or not. This'll attract people who hate ads to subscribe.
5. Publish your e-zine only on your web site. Have people subscribe to a "new issue" e-mail reminder. This could really increase your traffic and sales.
6. Sell advertising space in your product package. You could sell inserts, flyers, brochures, booklets, and digital ads for electronic products.