Like many others I like to recycle. This often manifests itself in appropriating stuff that's being thrown out. I can sometimes repurpose it; for example most of the hides I have built use pallets as sides.
Recently I collected some wood panels from the back of a hotel. I think it may have been a wardrobe in a previous life. I am slowly turning it into a Tawny Owl nest box. I cannot quite manage to do it for nothing - I need screws and a latch to open/close the inspection hatch. One task is to provide a floor lining for the nest itself. Fairly large wood chips are recommended. I managed to source them in an unusual way. Our town has active beavers. Out on a walk I found a tree active with Beaver gnawing so I collected the chips in a bag ready for the nest box lining. I'm stupidly pleased with myself.