Depending on what you are interested in swing by http://reddit.com/r/bodyweightfitness. Their recommended routine is based around gymnastics so the higher end workouts end up with you being able to do some interesting moves. Equipment to do it at home is pretty cheap. I use a 30 dollar doorway pull up bar and a 30 dollar set of gymnastic rings, but you can get away with less or have a pretty nice setup. As far as the kids go, I get up an hour before they do to workout at home.