I made 3 texture packs that all mimic older versions of classic.
Cave game (pre-classic rd)
https://www.mediafire.com/file/ktf80zz2d3vrcyh/cave_game.zip/file
Early classic (0.0.2a - c0.0.14a)
https://www.mediafire.com/file/um6s3dmvxq4uh88/early_classic.zip/file
Early classic with early c0.0.12a water
https://www.mediafire.com/file/rhrj5f6alxvcslc/early_classic_%280.0.12a_water%29.zip/file
I hope you like them!