Pico-projectors are relatively commonplace now, but one with an HDMI input is still something of a rarity. MicroVision's latest model takes last year's SHOWWX+ and adds in the digital input to make the MicroVision SHOWWX+ HDMI, perfect for easy hook-ups with your laptop or tablet.
Measuring in at 60 x 118 x 14 mm, the SHOWWX+ HDMI uses a laser projection system which means no focusing is necessary: simply point it at a wall and get up to a 2.5m display. Resolution is 848 x 480, which isn't going to do much justice to your Full HD movies but is at least enough for some YouTube style entertainment. Brightness is 15 lumens and contrast is around 5,000:1, and the HDMI input is HDCP compliant for protected sources.
In addition to the HDMI, there's the usual component input for use with a regular TV output from a laptop, DVD player or iPod. With the right adapter, meanwhile, you can also hook up a VGA connection, though with many notebooks having HDMI these days we doubt many will need that. The user-replaceable battery is good for up to 2hrs runtime.
The MicroVision SHOWWX+ HDMI is currently available to pre-order, priced at $369. It's expected to begin shipping imminently.