Kennedy64, why not pull that cover back from the TT, plug it in, fire up the furnace, warm it up, get the television going, pop some pop-corn on the stove and spend a couple nights in it. We do this all the time. Ours is not covered, so it's easy to do.
We have a port-a-potty so we don't have to use the bathroom in the camper or make a treck to the house in the snow. Clean the potty out every morning in the house. Keep tubs in the sink to catch any water and simply toss the water out the door so drains don't get used.
Get some games, crank the radio, or just spend time with your loved ones. Who says you 1) you have to wait till warm weather to use the camper, and 2) who says you have to go to a campground. Sounds like you have your camper right there on your property. Why not use it!