I reviewed the ShowWX+ pico projector a while back and pronounced it admirably tiny but problematic image-wise. Whatever the case, though, more input options certainly can’t hurt. They’ve added an HDMI variant of the projector so that you don’t have to worry about carrying around the VGA adapter or anything like that. The original had an adapter for super-easy use with Apple’s 30-pin connector that worked great… if you had an iPhone or iPad. But if you didn’t… ehh, not so much.
At any rate you can pre-order one for $369. Yeah, it’s pretty expensive, but it’s also one of the smallest and lightest pico projectors out there.