Check this out...just saw it today but it's a portable dock/projector for the Nintendo Switch with a built-in battery so you can play games anywhere with up to 120" of screen.
https://www.indiegogo.com/projects/ojo-world-s-first-nintendo-switch-projector-game#/
https://www.indiegogo.com/projects/ojo-world-s-first-nintendo-switch-projector-game#/