There is the Center for Furniture Craftsmanship here in Rockport, Maine. Its a huge facility and is well renowned for their classes and stuff. I have never been, but heard its high-class. There is plenty for the Mrs to do as well in the area as we have plenty of museums, lighthouses, antique stores and whatnot.
Outside of the school you might like to visit the Maine Maritime Museum (old wooden shipyard). Lie Nielsen Toolworks, Liberty Tool and a host of other places geared towrds woodworkers.
I am not sure if winter is the best time to come however. In the summer we have 11 million people milling around in this state, in the winter a little over a million. That means not enough people to keeps things open year around so some of those shops, museums and stuff close down after the leaf-peepers leave and don't open again until May.
I have no intention of traveling from birth to the grave in a manicured and well preserved body; but rather I will skid in sideways, totally beat up, completely worn out, utterly exhausted and jump off my tractor and loudly yell, "Wow, this is what it took to feed a nation!"