Bitcoin Digital Money Cash Global Currency Poster ... Bitcoin - First They Ignore You Poster.
Thanks for the ideas mate!
Really good work!
You can try to sell your artworks to the companies specializing in bitcoin, i am sure they will be happy to put them in their offices.
For the t-shirts i prefer subtle designs.
Someone already suggested that posters are great for businesses, but so far I had no luck with them, though I haven't reached out to them, so perhaps I should.