To say that my daughter was excited about the Tooth Fairy coming would be a HUGE understatement! She didn't want to go to sleep that night. You would have thought it was Christmas Eve! I think I tried to put the money under her pillow five times - She kept waking up to check under her pillow to see if the Tooth Fairy had come yet.
I also showed her the picture where I "caught" of the Tooth Fairy. There are multiple apps available to add a fairy to a picture that you take of your child sleeping. I'm not sure that my daughter believed it, but her 5yo brother thought it was "amazing"!