Re: Apple Symbols – the symbols aren't _too_ anachronistic: the font dates from Panther (10.3), which ran on all New World Macs (IIRC) – and indeed the B&W Power Mac G3 did have ADB (the "branch" icon at location (2, 2)), external SCSI (the icon at (10, 2)); while the "Lombard" PowerBook G3 had a reset interrupt switch (icon at (6, 7).

That being said, if you know why there are icons for the "programmer's switch" icon (6, 6) and LocalTalk (at (2, 8)), which died out with the Old World Macs, send answers on a postcard...