I have a city mini double and my kids fit very comfortably in it. However they do start getting antsy after not that long, which means trying to get long walks in (or light jogging, HAHA) is torturous. I don't have a treadmill/elliptical and I'm not joining a gym til fall.

Are there any tricks to keeping them quiet? I would like to not have to resort to electronics but will if I'm desperate. I can try to get the older (3.5) to look for things, play I spy, etc. But the 1.5 is trickier!