I have to say I'm a bit perplexed as to why a person who is living in a small camping trailer would not want a normally functioning laptop with a screen.

https://mm-dev.rocks/posts/my-working-environment/intro/

I could see something like a macbook laptop sans screen being useful if it was like, perma wired into the electronics enclosure in a cabinet on a boat and plugged into an existing monitor/keyboard/touchpad... Maybe a tiny two way HDMI KVM switch to toggle between it and an existing x86-64 small computer?