Star Trek: The 8mm Movie
Golden Age Film; Short Film (Drama) — Torrance, CA
This black & white silent 8mm movie with the Original Series music looping over it could very well be the first Star Trek fan film. The child actors, hand-made CGI and effects were cutting edge for home movies at the time!
Barb Reader has a link to this at http://www.break.com/usercontent/2010/5/29/star-trek-the-8mm-movie-1848482 but this is a dead link as at Jun 26, 2021 and the Wayback Machine has no record of it.
Star Trek: The 8mm Movie
02min 59sec — 01 January 1967
Uploaded to YouTube by johndcal, 22 May 2010: https://youtu.be/LmxlTh63-0c
