People ask all the time about where they can get an adapter for their Video 8 or MiniDV tapes. We usually say “I’d be a millionaire if I had one of those!”. They don’t exist, so please stop looking.
VHS-C did have an adapter that would allow you to put the small tape into your VHS VCR. That’s because it’s the same size tape inside the VHS-C cassette as a normal VHS tape.
Video 8 and MiniDV tapes are much narrower than 1/2″ VHS tape. If you did manage to get the tape into your VCR, it wouldn’t even line up with the heads.