A chalkboard valentine allows for countless changes of heart. Make the prop out of foam board covered with chalkboard self-adhesive paper. Write a message for one love, take a picture, and then erase it and write another note. Mail or e-mail the photos.
Before long, most new parents find themselves adrift in a jumble of precious trinkets: tiny shoes, well-loved toys, embroidered gowns, the lock of hair from baby's first trim. With some creativity, you can use these things to create a poetic record of the first years of life.