If you have small kids, you know the Magic School Bus. My son gets to watch it in health class at his elementary school and he LOVES it!
Anyway, here is a link where you can actually get a free copy of The Magic School Bus Gets Cleaned Up book. You call an 800 number and just tell them what you want and they will take your name and address and it will arrive in the mail within 3 weeks (but I have read of others getting it in 5 days.) Their site says that it will be sent out within 2 days as long as it is in stock. You will also get a confirmation email as well.
So this is a great kids freebie:)