Here's a tip: when your son is alone in his room and he's quiet for a little too long, you should probably go investigate. Chances are, he probably found the baby powder and decided to shake it all over his room. And his head. and the floor.
Check out the baby powder line on his head, I don't even know HOW he managed to do that. And if you look closely, you can see that it's even on his pacifier!
Oh this boy, he's the funniest little, dirt-covered noisy mess I know.