Time Capsule
Have your guests bring something that helps date the time the baby was born. A few good ideas would be: a video of the baby shower, cd, newspaper, ultrasound picture, magazine article, a list of wishes from your guests, etc.
Store all the items away in a box for a good 18 years. A high school graduation is always a fun time to open the capsule and look back at all the fun things people added to your capsule.
