Broad Street Variety is a great little shop near State Street in Boston. It’s just a little mom & pop type store, with a small, but useful amount of products. They have a great selection of Green Mountain Coffee Roasters Coffee, as well as sodas, chips, and other snacks.
The reason I choose to go here, rather than one of the larger stores around, is that the owners and staff are just fantastic. They are very friendly, and always welcoming. The prices at the shop are better than average for the area (Pepsi, for example is currently 2 for $1).
If you are near State Street it may be worth the extra block for you to walk to this great little shop.