From Amazon:

HDMI Pocket Projector. Go big with our pocket-sized HDMI projector. Projects up to 1080p HD images up to 60″ diagonal. Rechargeable and portable. Connects via HDMI to most smartphones, tablets, computers, video players, cameras and more* Mega-bright LED lamp projects up to 85 lumens for up to 2 hours on a single charge. Dual built-in speakers and focus control. Rechargeable 3800mAh battery doubles as a USB backup battery for your smartphone devices. Includes 3′ HDMI cable, Micro HDMI adapter, Mini HDMI adapter and AC adapter. Dimensions: 3.9″ w x 3.8″ d x .89″ h; .5 lbs. *IMPORTANT: Apple devices require an Apple Digital AV Adapter (sold separately) for HDMI use. Who says projectors are just for movies? Our portable projector connects to multiple devices for a “big screen” view of just about anything.

Buy one on Amazon