On the West Coast, author Ken Kesey, a prior volunteer for a CIA-sponsored LSD experiment, also advocated the use of the drug. Soon after participating, he was inspired to write the bestselling novel "One Flew Over the Cuckoo's Nest". Subsequently, after buying an old school bus, painting it with psychedelic graffiti and attracting a group of similarly minded individuals he dubbed the Merry Pranksters, Kesey and his group traveled across the country, often hosting "acid tests" where they would fill a large container with a diluted low dose form of the drug and give out diplomas to those who passed their test.