Well, alot depends on how early we got started in the morning. We tend to go to Magic Hour and not take breaks.
If we do that, we have dinner right after the parks close, and head back to the room.
Otherwise, we go to DTD and shop, go to PI while DD goes to one of the kids clubs, have a late dinner while DD goes to a kids club, go to Boardwalk, play miniture golf, watch the Electrical Light Pageant from one of the MK resort beaches, do the "monorail crawl", go to Epcot and stay for Illuminations (Epcot is always open until 9 pm), go to Disney Quest, resort hop, go to PO-R to the lounge and listen to the piano player (it is kid friendly, but there is a game room nearby for kids), catch a movie in DTD-WS, go to the campfire and free movie at Fort Wilderness, if they are doing it that evening, go to a dinner show, like the Luau, Hoop de Doo, or Mickey's BBQ, if it is warm enough, swim in the pool, go in the hot tub... Believe me... WDW doesn't shut down when the parks close!!! We have some of our best times after dark!