Oops paint is paint that has been rejected or not picked up by a customer at the hardware store. Some hardware stores, like the Home Depot in which I took the picture above, have their opps paint in a pretty prominent location. Others, like the Lowes in my town, have it tucked away so you have to do some searching for it. If you have small projects on your to-do list, you owe it to yourself to find this section. It's a treasure trove of cheap paint.
Lowes generally charges $1 to $1.50 for a sample jar of oops paint (generally called mistint paint there) and about $2.50 to $5 for larger cans. Home Depot generally charges 50 cents for sample jars and $1 to $2.50 for the small cans. Over the last few months, I've built up a little stock pile for my wedding projects.
These are just the cans I still have. Plenty have been mixed with other colors and used up completely.
Do you buy oops paint?
For what projects have you used it?