This year I volunteered to work as a cashier at our parish fish fries every other week. Tonight was one of my nights., so at 5:45 I was in the cafeteria to relieve one of the first shift volunteers.
During my work career I've had two jobs that involved handling money. At both of them, the cash drawer was set up with the small bills to the left and the larger on the right (in numerically consecutive order). That's how I learned how to do it, so in my mind it must be the right way. The person who sets up the tills, though, does it the opposite way. When there's a long line of people waiting to order, I'm afraid I'll get confused and start giving out the wrong change, so the first thing I do when I start my shift is change things around to suit me.
There are three cashiers working, so I don't feel bad about keeping customers waiting the few minutes it takes me to switch the bills. All of my volunteer co-workers are aware of my quirk and tease me a little about it. Doesn't bother me one bit. I'd rather get it right than be embarrassed.