pallet shanty

I will be attempting to make an enclosed space in my back yard.  I have never built anything enclosed so I did not want to invest a lot of money in this project, or my skill. I live in an area that at one time was flooded with factories and industry.  Sadly that is not the case anymore; but wood pallets are amazing only used a couple of times then stacked where they are burned or thrown away.  So wood pallets are my main building material.  I would like to use a lot of recycled material to enclose and insulate the structure.   I want to have the shed built and under roof by the time I return to my job as an intervention specialist at my local High School this fall.