I used the Sunshine game streaming software and the WiiU homebrew port of Moonlight to get game streaming working on a WiiU gamepad. It’s sort of like a bootleg Steam Deck, and it works surprisingly well, but it mostly just made me want a Steam Deck.
Looking back, it almost feels like a Switch prototype. It’s a goofy little thing, but I love it. That said, I also love the Nintendo Virtual Boy, so my judgement might be questionable.