I am not alone because in the past I saw the good job of [AlexTheGreat], and recently [3DSage] made cool glowing cubes.
Let me show you some concepts !
Daniel Grießhaber made an interesting project on hackaday.io for security of your wifi.
His device, called ESPTool, is based on the common ESP8266-12E and allow to scan wifi network and check security by attempting to crack access. This handy nice device is battery powered for ease of use.
Of course, it is illegal to try cracking another network than yours…