currently curious about programmable handheld computing devices that are explicitly not traditional general purpose computers, to get away from the linux desktop stack

the xteink4 seems neat, but the major FOSS firmware project for it already has AI assisted commits merged

the pinenote seems neat, but turns out it just runs linux

my experience with the pinetime was not very fun, it's not really feasible to hack on its software

any I've missed? Ideally in the sub-150€ range