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Ian made an awesome Nixie tube ornament –

“The Nixie Tube Ornament is a homage to the light-up&motion ornaments from the early 90’s. The ornament looks cool on a tree and makes a great gift. Finally, a use for IN-12/15 top view tubes!

I used an IN-15A symbol nixie in this ornament. An IN-12 works great too.”Link.