Regal Movies has a free movie program
Woodbourne and Centerville Libraries has their summer reading program where you can get some good prizes in the different age groups. Keep your eyes open it doesn't start till June 8. Those of you with young children under 2 there is a club for you too!
Dayton Public Library also has a summer reading program. Visit their site to see where your local branch might be.
Half Price book stores has a Feed Your Brain where you can score free books for kids. You get a $3 credit for any purchase.