Today only. Amazon has the Kodak LUMA 75 Ultra Mini Portable Pocket 640 x 360 Native (HD 1080p Compatible) LED DLP Pico Projector with Built-in Speaker (75 Lumens model, RODPJS75) on sale for $144 with free shipping.

Measures 3" x 3" x 0.8". Features a built-in rechargeable battery, HDMI, USB Type-A, microSD slot and a max image size of 100". Compatible with PC/Mac, iPhone, Android, iPad and more.