If you are a follower of retrocomputing, perhaps you caught the interactive Black Mirror episode Bandersnatch ... between two completely different 8-bit architectures is an epic in itself, but ...
This site has everything, from assembling Atari 8-bit computers based on the 6502 chip, to programming them in BASIC and assembly, to running official and homebrew games on the hardware itself.
The Lego Atari 2600 is a wonderful display piece for retro enthusiasts, and right now you can get this 2,532-piece building ...