I purchased an old analog Hitachi camcorder at a local hamfest (ham radio f leamarket), last weekend. What I originally wanted was the eye piece in it, which is a very small B&W TV picture tube that can show composite video. G iven that the Pi has a composite video output, this little thing makes a pe rfect tiny little monitor. Being dime sized, it is not the best for viewing , but could be useful as a graphics display monitor (perhaps audio spectrum ).
Later, I attacked the LCD viewer. It was a challenge to remove it from the camera but persistence and patience wins the day. This is a much more pract ical display, though still small for reading text.
The details of my exploits can be viewed here:
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cdEnjoy, Warren.