for me, it's paper money -- the presidents all have to be facing front, right side up
Until very recently, I did the same thing, only not because of OCD. Back in the seventies, when dollar change machines first came out, the portrait had to be up and the top of the head to the right to get change.
Throughout the following decades, I just kept on assuming they only work that way. It wasn't until a couple of years ago a guy behind me at the supermarket automated teller, seeing me take extra time to get the face up, said, "You can put them in either side up, it works". To my astonishment, it worked.
I wonder how many years ago the dollar change machines have been able to take either side up.