Whether or not a hoophouse is on the horizon, there are a fair number of vegetables and smaller structures that could make for a lovely harvest nearly into winter. Some favorites of the cool weather gardener are kale, cabbage, broccoli, and lettuce, but surely beets, leeks, and an assortment of other tasty treats could be added here and there. This article is a good primer for planning and planting. This article from Mother Earth News is also quite comprehensive with nice associated links.
If a hoophouse is a bit of a scary proposition, Coldframes are usually short, small, and often easy to build and maintain. They are a nice way to gently break into the realm of winter gardening without breaking your back or your bank account. That said, Elliott Coleman pops a few into his hoophouses to grow an even greater variety of vegetables throughout the winter months.
Local garden centers may also have cool weather crop seedlings for sale, too, along with the usual offerings of garlic and spring bulbs. Treat yourself to a tour and come home with a mini feast!