Try electronics and programming a fun way and get kids interested, try hacking and creativity through limitations.
Connect the original ESPboy module to get the fully functional gadget in a minute and understand how they work: LORA messenger, FM radio, MP3 player, weather station, GPS navigator, GSM phone... Or even make your unique one and quick test this prototype!
Use Arduino, Micropython, LUA, BASIC, Scratch, or other hundreds of available tools to make games and applications.
There is "ESPboy App Store" online with loads of applications and games ready to download and play in a few seconds, available directly from the device!
Connect to the internet with built-in WiFi, upload firmware/apps, communicate with people, and web services the same simple way as on your smartphones.