Indoor Dryer Vent Kit $15. Mine is connected to an exterior vent but this seems like a great way to get your money out of using your electric dryer in the winter since venting it INSIDE means you get to keep the heat it creates (plus its "wet" heat). Double smart. I would totally switch the vent twice a year for that!
Indoor Dryer Vent - This! It helps keep the basement toasty warm and the house smelling laundry fresh! Plus my clothes dry in only one cycle now, so the electric bill will be much better during the winter mos.