What do you do when your 3 yr. old wakes up in her room at 4am and decides it's time to play? She gets up, grabs ...

What do you do when your 3 yr. old wakes up in her room at 4am and decides it's time to play? She gets up, grabs her high volume talking toys, and starts to play at full volume while the rest of the house is totally silent.... You turn down the monitor a couple notches and say a silent OMG to yourself. Hmmm. How are we going to nip this possibility in the bud starting mañana?