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!
My BFF from high school, Debbie used to make these wonderful chocolate chip cookie bars stuffed with a creamy cheesecake filling. She'd use premade cookie dough (think Pillsbury or store brand) for a shortcut. You can also use homemade cookie dough.