Just cause you're snowed in doesn't mean you can't workout. Push ups, sit ups, Squats, lunges, planks, animal walks. There are many exercises you can do away from the gym and without equipment. You can use intervals to increase the intensity. I like to use Tabata. Try this:
Dynamic Warm up
Plank walk ups
If you want to make it more intense use:
Plyo push ups
Just a little something to do when you can't leave the house. Let me know how you do.