All Ahead Full!

I put him down for his nap today, and amazingly enough, he went down with no problem. About 15 minutes later he decided that he wasn't going to sleep right then, and I started hearing the normal complement of bangs, thumps and crashes, and the occasional (short lived or I'd have checked him) crying because he'd dropped something on himself. After a while I heard a weird crash over near the window, and I'm sitting here in the living room looking out the doors and wondering if I'm going to see him fall out of his window, and should I go check on him? A couple of seconds later I hear him talking through the A/C vents. He'd pulled out his floor register again, and was pretty obviously leaning in and talking into the ducts. :) I'll have to check and see what he's stuffed into the duct later...