Behold, the power of FONTS!
With the power of fonts, you can make a thing (you can even straight up remake a thing you saw online) and then print it at your local print shop for $3.00 and kablooie! You've got art on your bathroom wall!
Having this right outside the shower seems so incredibly fitting to me, I'm surprised everyone doesn't have the same thing on their bathroom wall.
I should point out that this quote is from Hitchhikers Guide to the Galaxy the MOVIE, not the book.