What a perfect idea! We must follow it next year.
Pay with any available cryptocurrency:
at our webstore[...] we will double your order!
get 50% OFF for [...] under 80 GBP, 6% OFF for orders above 80GBP
This is limited offer and valid only until the end of May. Merchant celebrating Bitcoin Pizza Day.
https://www.embroidered-patches.co.uk/celebrating-2018-bitcoin-pizza-day/
Until the end of May, you can have great great cryptocurrency embroidered patches from here: https://patchion.com/en/87-cryptocurrency and get your order doubled.
I believe that all crypto-friendly merchants should follow this way.
This is what I suggest for 2019 :) .
Lets spread the word, make Bitcoin Pizza Day even bigger than Black Friday .