A traditional and gracious way to end an evening of entertaining, is to offer coffee to your guests.
If you are a barrista, (professional or amateur), then go ahead and do your thing! But if you normally get your morning fix from Dunkin' Donuts, don't sweat it. Help is around the corner -- literally!
Most local coffee shops (from the "mom and pop store" to Dunkin' Donuts to Starbucks) offer their brewed coffee in party sizes. The coffee can be supplied in rental dispensers, which will keep it hot for hours.
Bring the coffee home and all you have to do is offer it to your guests alongside attractive containers of cream, Half & Half, and sugar cubes.