spent all day looking at various types of computers to go inside my bag (max height 190mm) that are not an iPad:

* Small (sub-12") laptops
* Android Tablets
* Android Smartphone & External Display
* Single Board Computer & External Display

I have come to the conclusion that I should just suck it up and have two bags, ugh. All the little computers suck in one way or another (either they're priced way too high thanks to the RAM apocalypse) or are computationally gimped either by the manufacturer, or sub-par specs due to software bloat.