Build a tool cabinet for keeping your barbecue tools out of the elements. Free downloadable plans are available at the link.
Build your own BBQ shelter for the backyard using the free step-by-step instructions at How To Specialist.
This bar cart, AKA beverage cart, party cart, or could be decorative plant cart, is made entirely of 1×3 boards and cost me under $20 to build in lumber.
Roll this cart onto your porch to help with the barbecue, or use it in the kitchen as a gourmet table. Free plans at Popular Mechanics.