Question about the repository.

[ChickenMan]

(Is there a Disk drive that can plug into, say, the 50 way connector on a series 2? Better yet, is there a modern replacement available?)

Yes there is a Microbee Floppy controller or Dreamdisk controller that can plug into the 50way to give Floppy access (as well as installing a boot rom also) but these are as rare as hens teeth.

If you have access to a EPROM burner, in your Series 2 bee you can replace the Wordbee ROM with a game eprom for almost instant game assess.  See here for more info - Some new Game ROMS for Series 2, 3 & PC85 Microbees (microbeetechnology.com.au)  The game needs to be 8k or less to fit to a 2764 eprom.  I can burn you one if you wish, just let me know which one.