Graffiti Shop, often referred to as "Graffiti Underground" because it's downstairs from Gordon Biersch, has been around since 1987, making it one of the longest-running, independent business left on Mill Avenue. True to its name, the walls (and ceiling) of the shop are covered with graffiti, but the main attractions are the racks and display cases, which house a variety of high-quality bongs, pipes, hookahs, and various other smoking paraphernalia.

The shop also carries nitrous oxide cartridges and dispensers, hand-dipped incense, and a variety of T-shirts, vinyl, and fetish wear (including some killer, Romper Stomper-ish boots). The owner of the shop, Lawrence (he'll probably want you to call him "Larry") is an affable guy with a goatee and ponytail who can answer any questions you may have about his shop's merchandise — and he's not above giving spur-of-the-moment discounts to cool people who're willing to drop some dough in his establishment. And since Larry recently purchased the Zong Company, which produces some of the most innovative, artful, high-quality bongs on Earth, money spent at the Graffiti Shop is well-spent (and well-smoked).