How can you use your handheld in classes?

I posed the question how can you use handhelds to improve your learning. Each student had to find 10 apps from their cell phone, ipod, MP3 player, or our class iPad using itunes app store and tell how each app could be used for learning. Then 3-4 students combined to create a presentation to sell their ideas to teachers at our school. Let them know what you think of their ideas.