Usually when I'm getting ready for a trip, I have trouble sleeping the night before, so I've found that what works well for me is to stay up really late -- sometimes all night -- and do chores. I always do all the laundry in the house before I leave, especially if I'm going somewhere without Darin and the kids because I want to make sure they have all their clothes available and don't have to worry about doing laundry. Even if it is a complete family trip, who wants to come home to no clean clothes? (Of course, I also really love doing laundry, so this is relaxing for me.) Preparing agendas for the trip, but more detailed agendas for any who are staying home, is also something I do. If I'm up ultra-late/early, I'll shower before going to bed (or, more accurately, taking a nap) before it's time to get up and head to the airport. Most always my flights are early in the morning.
What about you? Are you a last-minute throw-everything-in-the-suitcase type? Or is your luggage dutifully waiting by the door a day before you have to leave? Do you sleep well the night before you are scheduled to leave? Tell me how you prepare for a trip.