Pick up the phone, choose a country and a decade, and listen to some great music!
This rotary phone has a microcomputer built-in (a Raspberry Pi), that communicates to radiooooo.com, a web radio. There is a microcontroller (an Arduino) behind the map that controls the selection of the country. Together, this makes for an awesome, IoT project!
The map is glued to a metal panel, with an arduino at the back. Some countries have a jack pin. This is how you select the music !