Can't remember which thread it was in, but there was a discussion a few weeks ago about breaking an S-Video cable into its component signals or vice versa. I think someone was getting ready to wire up his own cable, but lo and behold, I came across
this on retail shelves today. You could use this to plug an S-Video device into a 1084S, or, with some gender changers, to plug a C64 into a slightly more modern display.