So This DevTerm from Clockwork Pi appears to be everything I could have wanted out of a #cybredeck when I was 14.
Design inspired by the Tandy 102, but slightly smaller. Screen the same basic aspect ratio as the HP 200 LX, but with modern connectivity and USB.
It'll run DOSBox, it'll run DVTM and all the various terminal apps I need.
The screen ain't sunlight readable, like my Omnibook, but ... I wonder what the bat life is like.
https://www.clockworkpi.com/devterm