I feel like this is a weird opinion, but: I like game controllers that use AA batteries. I have a pile of rechargeable AA batteries. They seem to last longer than proprietary packs or non-removable cells and work in lots of things.
Really, I find the obsession with thinness in modern devices misguided anyway - make a chomnk of a device, nicely fill the hand, rather than have a slab that the hand has to contort to hold...
I thought I could replace it with the Gemini, but between android not being a great palmtop OS and the keys on the Gemini being super sensitive, I’ve gone back to the LX. I can type about twice as fast on it, and I’m using it as a dev environment.
I just need to rig up a pi 0w to the serial port, and get www/lx and a decent serial terminal program going.