May I suggest running stairs. I know its silly, but you don't have to go to a gym, and it definitely tones the thighs and backside. Not to mention, it will totally give you an AWESOME cardiovascular work out....better than just running.
I know one post said not to eat after nine, but if you want it to be more effective, don't eat after 7. Make dinner as light as possible as well.
For your waist....try the following excercise. Put your hands above your head and clamp them together (not with an actual clamp of course) and keep your arms as straight as possible. Lean as far as you can to the right....and then to the left. Repeat this as many times as you can. The next day, your sides will hurt like crazy, but after a few days, you will see some improvement, and the pain will go away. If you feel that its not doing anything, try holding a can of vegetables over your head. Remember to keep your arms straight and together.