The finished board is now mounted in a metal project box with the front plate replaced with a sheet of tan plexi glass. Originally I wanted to make a nice wooden box for the clock, but since my carpentry skills are somewhat limited and I don't have the necessary tools at hand, I have settled for this simpler solution.

The clock only has one button for snooze / alarm off / display date. All other functions are handled by the Apple remote. The IR receiver is visible at the bottom right.

The red LED has been replaced with a real neon bulb which matches the hue of the nixies.

The finished clock.