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!
A bassinet diaper "cake" - a twist on the traditional diaper cake! Links to a ton of different and really cute versions of diaper cakes. Even a cute single tier diaper cake for those of us who can't afford a Costco size load of baby diapers.