This is very cool, and makes me curious about how many places there are already which accept ZEN for payments. Is there any list of restaurants, bars, and other businesses accepting ZEN?
With Paytomat system - 329+merchants accept cryptocurrencies (13 types of cryptocurrencies and ZEN is one of them)
They have list here
https://paytomat.com/ but don't be surprised that most of places are in Eastern Europe (and in Ukraine particularly)
Of course there are other systems, but while others have few or 1 crypto (i.e. BTC or BCH) - what's good here is that you can choose in which cryptocurrency to pay. I paid with ZEN several times