Who needs diapers?

Lately Beetle has taken on the responsibility of putting the kids to bed. They love it. I also love it. But I am afraid bad habits are starting to form. Like the Ipod for example, and toys in the crib, the other morning I had to "dig" Maxwell out of his crib because the whole train set, tracks and all, were sleeping with him. So back to the Ipod, Beetle will let the kids watch movies until they fall asleep and then he will go back in to their room and sneak it away from them. The other night he found Maxwell like this.
I am a little more worried about this habit vs. the Ipod habit.