A mod that stops toddlers from getting in and out of bed on their own?

Gosh, my parents used to just bribe my little sister with a cold hot dog to get her to stay in bed. LOL But, no, I have no knowledge of just such a mod. My Toddlers usually stay in their beds, (guess I'm lucky). Do your wee Sims have things in their bedroom to play with, keep them occupied. Or do they wander about and get into mischief?