If you want to add a simple shopping cart to your site, this is a good start.   It keeps track of returning users without using cookies.   They check off items on your pages then click "add to cart. "  It will add shipping etc. to the final total, then when they click "purchase", you are notified.   Their email is sent to you so you can contact them about payment. To deploy, simply add a checkbox code to each item on your site.

Ever want to show your place to the world? This is a fun and easy way to make a tour. Just take some pictures around your house with your digital camera. Stand in your front hall, take a picture, turn 90 degrees, take another picture, turn 90 degrees, take a third picture, and so on-- all through your house. Upload them to your web server, and your tour is almost ready.