In the past few years, we have covered plenty of amazing Nixie gadgets here. This Nixie Tube Clock In a Bottle is also worth a look. It keeps time with accuracy and has IN12 tubes. The clock has 3 buttons for changing brightness and setting up time.
The Nixie Tube Clock In a Bottle can also show the temperature every 15 seconds. It is powered by any USB charger you use for your phone.