GhostLink P1
A 3D-printable handheld for the ESP32-1732S019 "CYD" board: 1.9" display, 5-way nav, microSD, onboard charging and an 18650. Files are open-source and free. Rather not build one? Buy it assembled.
Only a couple of assembled units are ready right now. If they're sold out, everything below lets you build your own.