Last time we heard from Cynthia Plaster Caster, the Chicago girl who found art-world fame by immortalizing musicians’ central appendages, she was running for mayor. That didn’t work out, but the Caster has a new project: her autobiography, tentatively titled Plaster of Paradise, which she’ll finish just as soon as the public chips in enough money through Kickstarter to buy her some time off from her day job. She’s promising to dish about Jimi Hendrix and Frank Zappa, and asking for five grand but hoping for more.