New clone idea: How about a PC-G850VS or PC-E500 clone?

[Chr Yoko]

There are some existing solutions to your question :

1- X86 based mini PCs :
Such as the GPD Pocket PCs where you can run any windows software such as calculators emulators, math software (Mathalab, XCAS...) , programming languages such as Python "out of the box".
Then you can hook such "pocket PC" to a regular screen , keyboard and mouse and run it like a normal PC when at home.
I own a GPD Pocket 3 (i7 powered) and use it since a couple years as my main general home PC. I even connected a eGPU RX6700XT to its Thunderbolt port and a 2x4K screens set-up ;-)
https://gpdstore.net/
Those Pockets are usualy a bit higher price than their "Laptop" equivalent, but quality is great (full Alu machined body) and compactness is a real positive "game changer" to keep such PC always on hand.

2-Linux based "Cyberdecks" pocket size :
There are numerous projects in DIY on the net.
One that is "off the shelf" is the Clockwork Pi able to accept with several cores (ARM or Risk V based).
One core is based on a RPi CM4 https://www.clockworkpi.com/.
I expect a CM5 version coming as soon as the CM5 is launched by RPi.
Similar to the GPD, you can run Linux based software and emulators.

I do think that those new type of Pocket-PCs/Devices are the real modern versions of our old Sharp/Casio/Ti/HP Basic Pocket PCs we all enjoyed back in the 80s/90s.

Would be nice to have a forum section about those in the future in case enough people interrested and using those.