Can you recommend a plugin that I can use?

I am interested in a plugin where I can show related (or suggested) products with thumbnails that they can click. My site doesn’t make use of a shopping cart because they are the manufacturer, not distributor, so each product is set-up as a portfolio item (special project page).

Here’s a url to a product page example: http://tinyurl.com/lz8eqju

Any recommendations would be most appreciated.