@Leo, the same company that made your Nixie Clock has made an even larger one if you thought the one you had is too small. The height of the filament in the one you have are 40mm and these new ones are 70mm. Here’s an unboxing and setup from TechMoan:
They’re in Ukraine, so I guess this could be one way to support them while they’re enduring the Russian invasion and war.
previous thread: Leo, need a new clock toy for the set?