Sneakiness around Christmas

I don't know if there is something in the air, or if it's just the excitement of Santa coming, or just my kids, but they both seem to be sneaking around. I love our Christmas decorations, but a very small part of me is counting down the days till the 26 when we can put our Star Wars tree away and Hayden won't be waking up early to sneak down the stairs, to play with all the ornaments that are fragile and can break easily. This morning I was sleeping and heard someone downstairs. I came down to find the back door open and Hayden hiding. I asked where he was going and he said he was going to leave. With shock and a little bit of hurt (thinking he didn't like it here) I asked why he wanted to go. He said he was going to go to Target to get a small Lego Star Wars toy that was in his dream last night. Good luck with that one. It's a good thing there is a lock on our gate!
Rebecca's sneakiness is displayed by her sneaking into any and every corner to strip all of her clothes, including her diaper. Last night she was hiding naked under the table actually trying to put a new diaper on. She wanted to wear the diaper that had kitty cats on it, not the one with the dog, so she wanted to change. The last three nights as I've gone in to check on her before going to bed I've found her completely naked! So how is it that after I put her diaper back on while she's sleeping, it is off again when she wakes up? I think it is time to start potty training this little girl. If not I'm about ready to resort to duct tape.
(For obvious reasons there are no pictures of Rebecca and her "sneakiness")