Most of the hobby supplies that I need come from Hobby Lobby - brass, wood (basswood, balsa, even pine), paint (big selection of low-cost "crafts" acrylic paints), foamcore, blank decal paper. It's a general crafts, furniture, framing, decorating store. Lots of jewelry-making supplies, which means wire, fasteners, shapes. Take note of these. Plus, there are women on these aisles!
It's not a "train store"; the HO/N stuff has re-appeared locally, but no O. That's fine, because the selection was as you might expect. I did get a "clearance" price on a Lionel NYC Flyer 0-8-0 set a few years ago - just scratch bashing loco/cars/parts so far as I'm concerned (I really do need to sell that Fastrack at a train show).
It has basic supplies. It is, however, missing a BIG one: no styrene sheets and shapes. I really should contact them about that - I'm sure that would get it done!