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definitely check craigslist. i look there quite often, lots of people give wood away that they don't want, like when a tree falls in their yard. i search for firewood, trees, wood and under the "free" section.
Dude , look around and see if you can find an orchard or tree somewhere , go and ask if you may collect a bit to use as Smoking fuel. All they can say is , "NO".
Good things come to those that search , just got 3 trees of Cherry wood (from an Aunt), but... ya never know. I'm just sayin'...