I am a Mum of two toddler aged boys and I cant go past using aerobic dvd's for my morning exercise. I have recently purchased a Ministry of Sound dvd as I love that music and even though it goes for over an hour you can sort of cut it down to fit it into the time you have. Yes there are times when the boys start fighting and I have to sprint up the hallway in the middle of the routine but I class it as extra exercise so its all good! In saying that, I usually find that they are transfixed with watching me jumping around like an idiot that they stay close by and are pretty well behaved.
The other thing I used to do was to use the Wii Fit to do some jogging, hula hooping etc and then say that if they were good while Mummy was doing her exercise they could do their own "Body Test" when I was finished. They loved seeing their own characters that we made up for them and even though I had to hold them still for the Centre Of Gravity test they loved seeing their little characters on the tv. It was a win win situation.