This made me laugh, funny suggestion, and interesting answer.
Cups looks great, to BTC or not to BTC! Great idea, with more ideas like that one you can start business with hand made cups, if they are hand made, maybe that is just a printer?!
SFR10 asked a good question here, I would like to know some answers too:
Interesting idea you have here, pictures on the cups looks great. I think you should definitely try to make some little business from this. Why not to accept any kind of payment, fiat or crypto. Put the price in currency that suits you and state that you accept any currency with same value. I would like to hear price for your cups, and some other informations of course, more informations you provide more people will have trust in what you do. I will give you some merits, maybe that can motivate you to be more active about it and to put even more effort in your little business. Good luck!