HP’s Envy 120 all-in-one printer does it all but unlike other printers, it does it quietly so that it can be used during a lesson. The Envy 120 has a pull-out 4.3-inch preview screen, a place to charge a phone and can print on both sides of a page. It’s mesmerizing to watch the motorized arm catch the pages after they have been printed and then disappears. Pages being scanned sit face up and you can watch the action take place. It costs $250.