To update the post below, about Gunnar's night-time adventures...
Last night was blessedly uneventful.
Kerry moved furniture in front of the front and back doors. This is sort of a safety dilemma. Not enough furniture to make it impossible to get out in an emergency, but enough to slow down a sleep-walking child, and maybe make some noise.
I tied a jingle bell around Gunnar's ankle. He was delighted.
I did hear a little jingling around 2:30am, but it was just a potty-break, and he was coherent and returned to bed.
BUT... there's more to the story!
I have a cousin (married, two kids) down near Seattle. She called me this morning and said, "I need parenting advice. Do any of your kids ever sleep-walk?"
Her youngest, about Gunnar's age, did THE EXACT SAME THING on THE EXACT SAME NIGHT! Got up in a deep sleep and walked right out the door of the house. (And my cousin did the same thing I did - slept with her the rest of the night, and piled furniture to block the doors the next night!)
Gives me goose-bumps, it does.