Some interesting places to get household hardware:
Rejuvenation carries a good selection of period correct hardware for your antique or vintage home. There's plenty of modern style in there too.
Lee Valley carries a wide selection of kitchen hardware as well as tons of other household hardware and tools. They mainly carry what I would call basic hardware, but as you look through the huge selection, a few gems appear.
Historic House Parts carries a selection of reproduction and antique home hardware. also doors, tile, stained glass. You name it, they've got it.