@drmaddkap https://www.youtube.com/watch?v=gX3KV42qXs0 <- It seems that LTT recently put out an unboxing video on a device that might fit your use case well.

It's basically a portable display with a connected keyboard, touchpad, and battery... but it's notably /not/ an independent device; it doesn't contain computing functionality of its own, and it's intended to be connected to another device (such as a phone).