Rent a bunch of movies you havent seen yet, then get a bottle of wine and some chocolates. If you have a hubby or boyfriend then get him in on it and have a movie night right there on the living room floor.
Also, use this time without kids to have sex in places you would normally get caught...it will feel naughty even though there is nothing wrong with it when they are gone.
Do something that you normally couldn't do like go to a bookstore and just browse through the books, or try on a ton of different outfits at a store.... or do something that you don't normally have time for... maybe scrapbook, or whatever makes you relaxed and energized.... have tons of fun and hope this helps!
Make some calls, catch up with your girls, and see who can meet you for lunch and when. Schedule a road trip (with your honey or solo/with girlfriends) and do all the stuff you can't really do when you are a full-time on duty mom!