Is a good forum for this, but how much room do you have and how warm and light is your 'indoor'?
Winter gardens in the south include collard greens, mustard greens ( I grow Purple Wave mustard and love it) Arugula, cilantro, rainbow chard, radishes, parsley, fennel, mints, blue curled kale, or Russian Red kale, broccoli, cauliflower, green onions, onion chives....
would any of those be interesting to you?