When I saw this replication at 14, it's really amazed me.

Now I'm 22, I'm still amazed.

Maybe nixie tubes are low efficiency, power hungry, fragile, but it's romantic.

If I got the opportunity to invest in something, the first thing might be an anonymous P2P overlay network, then followed by recreating those nixie tubes, not designing new ones, but mimicking the shape of those classic models.