Lowe's here sells poplar, oak, and Unknown Foreign Hardwood. Haven't tried Home Depot, but they're probably about the same. Like Twistedlimbs said, the poplar dowels make good arrows if you pick through 'em, but 3/8" is pretty big diameter. The 5/16" ones usually spine out pretty low, but you can find some that are good for hunting weight bows, or plane the 3/8" down to 23/64" or 11/32".