Tips for Building a Storage Shed - Article: The Family Handyman | Instead of a concrete slab-- genius! And great drainage. Great idea for garden shed or even the chicken coop. Wouldn't have to worry about foxes digging in to the coop and it would be cheaper than concrete and easier to clean than a plywood floor.
Cheap: Build a firewood shed for under $80. Wooden pallets are an excellent resource for low-cost/no-cost wood. About fifty percent of the shelter pictured above is comprised of free wood. It is about 25 square feet with a maximum height of 6 feet. The available storage space of the shed is about 135 cubic feet… slightly more than enough for a cord of wood. Would like one to be built by the pumpkin patch for winter.