You can probably encase a Raspberry PI with a battery and a touch screen, micro SD cards can go much higher than 16, and install Linux. Keep in mind that the Linux touch UIs aren’t really great imo, the best experience I’ve had so far is the steam deck.
Maybe a bit niche, but if you’re in the Scala ecosystem and seen what happened with Akka -> Apache Pekko. Version one of Pekko was a 1-1 rename of Akka