Because everyone comes through the kitchen at least once a day, it is a great place to maintain centralized information for the family. I know this is a nonfood, non-eating item, but because the kitchen is in the center of the home it's a great place to keep home-base information.
The Junk Drawer
Lot's of kitchens have a "catch-all drawer that is often referred to as the junk drawer. It can be hold anything from soy sauce packets to rubber bands, pennies, matches, pushpins and stray refrigerator magnets. I'm only going to say this once: NO. JUNK. DRAWER.
Product Manuals & Warranties
Create a file, binder or magazine file to store all printed information for your household products. Check online for the electronic version of your product manuals and warranties and create a Springpad notebook to store them all so you can ditch the hard copy. Alternatively, just snap a picture or jot down a note (digital or analog) of the important information you'll need if you talk to customer service, like model number or serial number.