Microcontrollers are suitable for controlling devices and reading sensors, but you can also play games on them. I recently came across such a game: a Star Wars game
With an ESP-WROOM-02 and an MQ-3 alcohol sensor you can easily make a portable alcohol detector. It will be a simpler implementation of the earlier project “Arduino breathalyzer:
One of the more obvious applications of a board like the ESP-Wroom-02 is using it as “WiFi jammer”. In the previous post I already wrote about the board
The “WEMOS D1 Esp-Wroom-02” that I got from VNG Systems is another microcontroller development board with an ESP8266 WiFi chip. This board also has an OLED screen, 18650 battery charging