This instruction will show you how I built a desktop clock and thermometer, without any special tools. This desktop clock shows the current time, the temperature and the humidity. The clock is very precise because it is synchronized to a time server using the WiFi connection of an esp8266 NodeMCU IoT module. The humidity and temperature are measured with a local sensor. The unit is powered by a standard phone charger (5VDC). There are two displays installed. The first two digits of the upper display show the temperature in Celsius, the second two-digit show the humidity. The lower display shows the time. The complete electronics are built into a paper box, which was the packaging of a USB memory stick.”