Death to Pennies!
Back in college, I spent 5 months studying abroad in Australia. They had stopped using pennies, instead simply rounding up or down to the nearest five cents.
It was awesome! Pennies are heavy, and they’re a pain in the ass to deal with.
(Australia has dollar coins though, which are even heavier than pennies. If I had to pick, I’d rather keep pennies and use dollar bills.)