I'll try to do low carb veg instead of fruit. Can't loose a thing with anything over 20 carbs a day, and then it's a week. I like the idea of choosing one thing to do throughout one single day, easier to shoot for.
Workout tip jar. After each workout, tip yourself a buck. After 100 workouts, treat yourself to new shoes or clothes or massage. But only a buck? Thats a 100 workouts at a week so in a year i get a treat!