Hardly larger than a Tic Tac case, and rated at 100 lumens, the 3-ounce Philips Pocket Projector PPX4010 is an excellent laptop companion for deskside presentations.
The UO Smart Beam Laser Projector offers 720p HD resolution, a 60-lumen brightness rating, and the right connections—both wired and wireless—for a cell phone or tablet, all packed inside a 2.2-inch cube.
The Celluon PicoAir projector connects only with devices that support Miracast or DLNA, but for those phones and tablets with which it works, it offers an easy way to project a large image.
The Celluon PicoPro projector is easy to use, an excellent companion for a cell phone, and fits in a shirt pocket.