My friend just told me of a little Christmas tradition they started that has really helped their 2 little boys be "nice" and not so "naughty".
It is called
THE ELF ON THE SHELF
and comes with a book and a little elf (Santa's little helper).
(Warning: The elf is cute but kinda creepy at the same time!)
You name the elf and then each morning he magically appears in a new spot in the house. He watches each day to see "who is being naughty and nice" and then reports back to Santa.
My friend named their elf "Jingle" and it was hilarious to see that as her boys were starting to misbehave, she'd simply say, "Jingle is watching!" and they'd stop!
I gotta get one of these to help Thing 1 and Thing 2 stay on the NICE list!