It's not a new amenity concept, but it is for the Media train station. Yesterday an advertisement was posted that offers to wash your car for a fee while it's parked at the station, or I suppose anywhere in the area.
One thing I never really understood is why Septa doesn't entertain putting a morning breakfast cart at their stations. If only for a cup of coffee and maybe something to eat. I'm sure it would be a lucrative endeavor even if they subleted the service out to a third-party. Throw a few chairs up in front of it and waiting for a late train wouldn't be a nearly as bad.