Well, it finally happened. The elves didn’t move last night. DW woke at 2am, used the bathroom and noticed the elves still in last night’s location. She put them on my dresser when she came back to bed.
At 7am, Crash enters our room and I hear “Dad. Will you come help me find the elves?”
So when he goes to the basement, the elves moved to a new spot. They must have gotten thirsty on their trip back from the Pole last night.