I am required to inform you that on Sept. 29 at 8 AM PDT Analogue is going to be selling a see-through plastic limited edition of their FPGA-based multi-emulator "game preservation" handheld. They will probably sell out almost immediately and you might not even be able to get one.
I've had one of these for about a month, I'm very happy with it, it has actually more limited capabilities than whatever the cheapest Ambernic multi-emulator handheld you can find on Amazon right now is but will generally give you less trouble, especially if you get the Dock and are doing stuff like using bluetooth gamepads. Core setup is kind of irritating the first time you do it but easy after that, there are a bunch of community tools. Most Mister cores seem to be getting ported over, and the device seems to be powerful enough to go about halfway through the 32-bit era. It also has very good official cores from Analogue, with special features that the third-party cores can't yet do like LCD matrix emulation, but those only work with physical cartridges (it supports GB, GBC, and GBA and there's a adapter kit for some other formats). I'm mostly enjoying it as a way to get into FPGA development without having to solder.