I’m wanting to purchase a belt gizmo kit. But I’m not finding any so far. Any help would be appreciated.
Look harder 
! You’ll find an excellent kit in the For Sale section
If you dig the GBII design and don’t need it for this Halloween (and if you do need it for this Halloween you’re boned anyway 
), you might hold off for this beauty: http://www.gbfans.com/community/viewtopic.php?f=31&t=38237
Agreed on the black kit, and Doug also makes a gb1 kit that is awesome too!
I have the board and the nixie holder from the GB1 kit that Doug makes, and it’s totally worth investing in the board. I chose to find my own nixies, I used an alternative version, but it saved me quite a bit of money and they look great.