Found....

hanging around suspiciously near the fireplace chimney.... one letter, that reads as follows:

Dear Stata

wach out thay are traps in my bedroom!  And can you put presents in my room.

Colby

Also found - several contraptions/traps upstairs, a camera rigged to shoot video under the Christmas tree, and two little boys who are "concentrating really hard on finding Santa" right now.  Instead of making their beds, like their mother asked them to.