The Culture Shop
This is a great gift shop, especially if you want something under the headers fair trade, organic, etc. Pottery, home items, foreign bric-a-brac, stationery, fabrics, etc.
George's Place
An upscale men's clothing store that's been here for over 40 years, serving local professionals. While they have clothes for all sizes, they have a particularly good selection of extra-size suits, and of dress shoes in exotic leathers.
PollySue's Vintage Shop
D.C.'s OK, technically Maryland's favorite hidden gem of a vintage boutique is just a five minute walk from the Takoma metro station. Rest assured the prices here will be far more reasonable, and the vintage clothing far more vintage, than the yuppie-hipster fodder downtown. There are plenty of very wearable items here, but there are also a good amount of clothes that would be more fun at a party than in public!