Title says it all, in what ways can the Ipad basically connect and work with other apple, or even none apple, products? Like, I saw theres an app for the iphone to let you use it as a scanner, which really appealed to me. What else is there? Anything special you can do with full fledged computers and laptops from apple? Like, I saw that you could use it as a second monitor to a computer with an app.