Michelangelo's illustrated grocery list. No joke!
“Because the servant he was sending to market was illiterate, Michelangelo illustrated the shopping lists — a herring, tortelli, two fennel soups, four anchovies and ‘a small quarter of a rough wine’ — with rushed (and all the more exquisite for it) caricatures in pen and ink.” – Steve Duin, The Oregonian, October 17, 2009