Having an early dinner with friends and they suggested to use the molecular structure for caffeine and use the symbol. Have the periodic table as the lettering used a la Breaking Bad.
Also, not to point out the obvious, but you should call it CGOD'S
And call the shop "the coffee experiment". I was reading up on Wikipedia for some inspiration and stumbled upon this: https://en.wikipedia.org/wiki/Gustav_III_of_Sweden%27s_coffee_experiment It's quite interesting.The king ordered the experiment to be conducted using two identical twins. Both of the twins had been tried for the crimes they had committed and condemned to death. Their sentences were commuted to life imprisonment on the condition that one of the twins drank three pots of coffee, and the other drank the same amount of tea, every day for the rest of their lives
Also, I wanna point out my one choice that I thought was clever: The Ole Factory -coffee smells great, would be a nice play on words.