I second the character breakfast, which is a nice way to say good-bye..
Disney springs for last minute shopping... and a early lunch
You could try and get a late check out and hit the pool for a few hours, and then shower and change to get ready to head home....
Our friends book a extra day so that they can stay in the room, as normally they have later night flights, they just check out early and then head to the airport, with grand-kids in tow, they can nap in room which makes it worth the extra cost, and everyone can clean up before heading to the airport....