Amazon: FREE The Children’s Busy Book (Kindle Edition)
Amazon has The Children’s Busy Book: 365 Creative Learning Games and Activities to Keep Your 6- to 10-Year-Old Busy [Kindle Edition] for FREE right now (List Price: $9.95). This book has great reviews!
Amazon also has The Playdate Busy Book: 200 Fun Activities for Kids of Different Ages [Kindle Edition] for FREE right now (List Price: $9.95).
Make sure to grab these now, they could go back to full price at any time.