ElephantStaircase’s VGA to RJ45 conversion – “A VGA monitor connection only requires 8 conductors for operations. Although it has many pins, they are not all needed, and some are used for keying. An Ethernet cable (CAT5, CAT5e, CAT6) cable has 8 conductors and can carry the signal a long distance on a thin cable for cheap.” Thanks Jher! Link.
HOW TO – VGA to RJ45 conversion