Yes, I've had customers suggest I take their child's photo while watching the tv, and it never worked. "Drugged stupification" is a very apt description.
But when you're not working on the face it might be a very good solution for some children.
Thanks so much everyone for offering suggestions. Mischa, it's a good idea about using teens; I might be able to find some in the neighborhood. In the meanwhile I'm using my own children. This is very humbling, I must say. I need to learn anatomy much better... You need to know anatomy, because when they're not still it's nearly impossible to draw the body otherwise. Linda and Michael and whoever else works this way, I admire you greatly! I've done a few more drawings, that I'm a little embarrassed to show, but I've committed myself to this! I'll start a new thread.