I have a grill above oven area, which gets warm so use that, but if it is not an oven cooked meal you can always put very hot water in the washing up bowl for a few minutes.
Old-fashioned ovens used to have a warming drawer, but modern ones obviously don't. If you have a bouble oven, or a separate grill compartment, the unudes half should have enough heat in it to put the plate in and warm them up nicely.
I've got an electric quilt thing, you fold the plates inside it to heat them up. (PS no it's platesized, I don't stuff them in my bed...)
If I am pinging my food then I put the plates underneath the dish being pinged.
thats why they all fly over here - better the risk of your catz than the wrath of a Frenchman with his gun. However, given their miltary record, how the hell do they manage to shoot a thrush and miss anything bigger?