I've discovered some great exercise options that you can download and do at home, for whatever amount of time you have in your schedule.
Peak Performance Abs workout
Jumprope. If you're going moderately, you'll burn ~11 calories/ minute. If you step it up in intensity, you can burn ~20 calories/minute.
Strength Espresso workout
Total body Workout
KBC (Kickbox, Booty and Core) Workout
Cardio Kick Butt Workout
Jog for 30 minutes. If you jog a 10 minute mile, you'll burn ~300 calories in 30 minutes!
Strengthen & Condition Workout by Brooke Burke
Jog for 45 minutes. Again, at a 10 minute mile, you'll burn ~450 calories!