And on the higher end you can get an ESP32 CYD (Cheap Yellow Display) which has a 2.8" or larger touch screen, SD card slot, LiPo battery connection and charger, speaker port, and maybe more for ~$15. Can make fancy UIs for it with LVGL or install something like MicroPythonOS on it if you have PSRAM.
alt Hacker News
And on the higher end you can get an ESP32 CYD (Cheap Yellow Display) which has a 2.8" or larger touch screen, SD card slot, LiPo battery connection and charger, speaker port, and maybe more for ~$15. Can make fancy UIs for it with LVGL or install something like MicroPythonOS on it if you have PSRAM.
https://lvgl.io/ https://micropythonos.com/