I try to use recycled materials whenever possible. For example, I didn't buy my first roll of chicken wire until my fifth year of haunting because I could always just poach what was left over from the garden. I use tons of newspaper, cardboard, scrap wood, and empty containers.
This year, I had to buy fresh lumber because the stuff I recovered from a shed last year was too rotten to build on.
That's how dedicated I am to using older, unloved material.