Here's my Nixie Clock, from back in Dec/Jan:
The electronics were a kit that add a bunch of nice features like auto blanking, fancier transitions, and "cathode poisoning prevention" that periodically rolls all the tubes through all their digits.
The Nixies were from Ebay, IN-8s. The board is using a HV5812 High Voltage Driver IC to drive them.
the base is my design, CNC'd from walnut, with maple endcaps. (walnut block was slightly too small).
The edges aren't super square, as I fucked up with the belt sander and didn't want to do another full production. Finished it with danish oil.