i have bad luck with phones so i go through them faster than most so i always the the $100 androids.
in the past i’ve used them as ip cameras as part of a homemade security monitoring systems using motion; car dash cams; car backup cameras; homemade lojack; car stereo screens; parallel parking sensor aides; secondary alarm clocks; intermediate android auto proxies; backup alarm clocks; and secondary phones for applications/control that my employers have mandated; system interface screen; bathroom readers; usb drives; wifi extenders; and remote controls.