do you have a Swiss ball at home? Deep wall squats w/swiss ball holding a DB (or plate) will give you a good squat workout. Or without the ball, just hold the DB/plates on your chest for an approximation of a BB front squat. Put the weights in a backpack for an approximation of a back squat if you are fearfull to squat with a BB (or don't have one). You can deadlift DB off a couple of telephone books - or put the weights in a backback, set it on the floor, grab it low on the sides and deadlift that. Or do one-arm DB snatches.
You can do bent-over rows with BB or DB at home. If you have a bench, you can experiment with lying face down and doing DB rows - on flat, incline or decline. You can also one-arm row with DB or BB (yes, you really can).