Baby shower idea: Guess the baby's birthday! Great way to replace a guest book. You could use stickers of a pacifier and/or a rattle. Each person placed the sticker on the date they predicted and signed their name. Perfect to put in a scrapbook, too!
The price is right game, cool idea.purchase a couple baby items from the registry (that you gift to her later of course) and created a simple card where guests had to guess the price. I set out the items on a side table for them to look at.