This ESP32-based 7-segment clock with Wi-Fi that not only tells time but also displays temperature is great for in your bedroom, office, lab or workspace.
The time is obtained from the Internet over Wi-Fi, the temperature from an MQTT client that can be placed anywhere, even outside. Because the firmware is flexible and open source, all sorts of functions can be added easily like a doorbell monitor, a kitchen timer or a scoreboard.
The clock can also connect to a Raspberry Pi to exchange information. It can be the first brick of your MQTT home automation system.