Search has long been a pain point for ecommerce vendors. Take a look at some of the ways I have addressed search in Zen Cart, including creating custom pages for frequent searches, adding fields to the products table to permit searching, using jQuery, and designing custom sideboxes.
More options for you to sell a bundle and make a bundle! My new Kitbuilder for Zen Cart module is the latest entry in my series of Zen Cart Bundling options. KitBuilder allows you to build “kits” of related products (without attributes), which are all sold together with a single click. Kitbuilder even comes with a kit marketing plugin that allows you to show off your kits in a centerbox on your home page.