I've made this unique wall using five pallets. I used an electric fire box to add heat. The biggest problem for this wall was to cover the electrical breaker box, but still be able to reach it when I need to reset a breaker. Pallets were the perfect solution. The pallet is secured to the wall, but the inside panel is removable. I attached the first pallet to the wall stud, the second pallet to the first on and so on until the last one, that one gets attached to the wall stud also. I also added some 2x4s for shelves.