Playing cards book of LOVE! Turn a deck of cards into a book with 52 reasons why you love your Valentine. Such a cute idea! Could even be a (reusable) coupon book. One thoughtful or loving idea for each of the 52 weeks of the year!
Bottle Bank via Martha Stewart: transform a used plastic bottle into a cute piggy bank. Could use same idea to made little containers for kids to store their collections too (use bottle with wider opening and don't make slot)