Have some fun with the Spell and Say 2, robotic voice player. You can also paste text into the screen and have it read aloud.
Children will also get a kick out of the old retro sounding robotic voice and could possibly spend hours typing different words and sentences just to hear variances in the speech.
Just tap on the screen and a keyboard will appear to type what you want. When you are finished, touch speak. The Spell And Say 2 also has sliders to adjust the pitch and speed to your liking. Enjoy!