Pencil cases have been in use for over 200 years. In 1946, Verona Pearl Amoth developed and patented a unique pencil case with separate compartments for each writing instrument, so pens and pencil tips would remain protected, and clothing would not get marked accidentally. Amoth also invented replaceable erasers for pencils. Pencil cases are still as popular as ever. They make great promotional giveaways for customers and employees.