It's always good to have a ready supply of new and used wood.
I allow my wood to sit in the work area for approximately 3-6 months
before using it, so that it can adjust to the humidity of its environment.
I am always on the lookout for free wood of any kind.
Old broken furniture; scraps and leftovers from various projects you
may be doing. I even get an occasional piece from my friends involved
in karate, once they've broken the wood with their feet.
All free, scrap, and otherwise unusable wood is appreciated.