If you're raising a book-lover who's always looking for a new favorite, Sproutkin's Sproutkit ($25 per month) is a must. Each Sproutkit contains two to four high-quality board books (and sometimes a bonus toy) chosen by educational advisers to revolve around a central theme. The kits, for just-born infants to 3-year-olds, also include a Sproutcard, which explains developmental milestones and provides tips on how to use the books to foster development. The best part? Everything you get is yours to keep!