I’ve been in the midst of digitizing my old hip-hop tapes and the last actual cassette mix-tape I put together was this: Double Flip Vol. 9, originally created in 1999/2000. It was a double tape (hence the name) and packs in 2 hours of music.
You can find more info and the tracklist here.
Enjoy! (And happy holidays from Soul Sides to you and yours).