mikeg:
There's a Woodcraft store in Springfield, VA, that might be walkable from the Franconia-Springfield Metro, which is a 1/4 mile SE of the Springfield Mall, right next to the CSX railroad tracks (distance looks like about 1.5 mile walk...) Store web site is
http://www.woodcraft.com/stores/store.aspx?id=327 so you can see where it is. I know Fairfax County has bus service from the Metro, but don't know which line might go near Woodcraft. There's also one in Leesburg, but the Metro doesn't go anywhere near there.
You could always visit the Smithsonian America History Museum, if it's still open. It's on the Mall, so it's fairly easy to find, but it's supposed to be closing soon for two years of renovation.
There may be other woodcarving related stuff, but I don't know about it.
Claude