Cooking spray makes it easy to evenly grease a pan or a muffin tin, but the spray can often get on surrounding areas. The Kitchn has a neat trick to make cleaning up easier: open your dishwasher door and spray your pan over it.
Since a dishwasher is designed to hold dirty dishes, it doubles well as a surface you don't have to clean. Make sure all clean dishes are emptied, then place the baking pan over the door and spray away! It's also a great place to dust baking pans with flour or cakes with powdered sugar.
The next time you use the dishwasher, the door will be automatically cleaned. This trick should be especially useful when you oil up a measuring cup or spoon.