Play people-watching bingo in the busiest place you know.
Get dressed up and go on tours of expensive homes for sale in your neighborhood.
Eat a sunrise breakfast picnic in a park or canyon where you can watch the sun rise.
Take turns sitting on his lap and telling him what you want for Christmas and then get your picture taken with him.
Purchase two large ice blocks, cover them with a towel and slide down a grassy slope at a park.
Answer this New York Times questionnaire that might make you fall in love. Take a free class at your library or community center in something neither of you are good at.
Play farmers market ABCs: See who can find something that starts with every letter of the alphabet first.