Shed nearly totally constructed from pallets,used heavy duty pallets for base, and walls were made from many different size pallets, Tried using the pallet whole ie not cutting it up that way it kept its strength The floor was made from euro pallets which are a lot thicker and worked very well. Windows and door were given to me,the only real cost was the roof which I ended up using some decking going cheap from B and Q. Decided to leave one side open showing the pallets and was able to work in some shelving. Took on average eight months all told, but see it as a work in progress and hope to add decking to the front area and maybe work in an outside bar area just under the window ! All the cladding to the outside is once again pallets , the tip here is to cut the ends off with electric saw and although you sacrifice some of the pallet you save Lots of time.