DS7 adamantly doesn't believe in the tooth fairy. ("I know it's you, Mom!") That doesn't keep him from enjoying the experience of putting a tooth under his pillow at bedtime and getting a dollar in the morning.

When he was three, and asked whether fairies were real, I said they aren't (take THAT, Tinkerbell!). Like a good giftie, he extrapolated that to the tooth fairy.

We're Jewish, so Santa isn't an issue for us.