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This may be a late reply but portable projectors have come a long way since they were first created.

I've bought a few of them and found them to be quite useful. The Kindle Fire HD also works well with them, if you purchase the Micro-HDMI to HDMI adapter.

I'm a fan of AAXA Technologies personally but there are tons of manufacturers available.

Some examples:
AAXA P2 Jr Pico Projector
Amazon.com : 3M MP225a Mobile Projector : Electronics

Here's a video I found online of what you can do with the Kindle Fire HD with one of these projectors:
Iron Man Android Gameplay on Amazon Kindle Fire HD w/ AAXA P2 Jr - YouTube
 
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