Well, you don't see this everyday. Artist Jacqueline Lou Skaggs has taken discarded pennies (well, every penny gets discarded, doesn't it?) and painted the smallest of portraits, landscapes, and figurative paintings on the smallest of surfaces. Can't imagine you need a lot of oils for this.
From the artist:
"This small body of twelve works consist of images painted on found, discarded pennies. These pictures pay homage to, not only, the binding ideologies that define our family, religious, social and political worlds- but also to the resonating mythological powers of traditional painting and miniature picture making- much like the Dutch oils on copper from the 17th century. Paid tribute no less on the face of discarded coins these iconic images transcend the coins value while, to some extent, defacing it."