The Yarn Company (CLOSED)

Nearly every inch of this second-floor cubbyhole is covered with something stitched or stitchable, with yarns ranging from $7 cotton workhorse to $50 cashmere balls better suited to petting than working with. Neophytes can sign up for lessons ($50 per hour, private) from owners Jordana Jacobs and Julie Carles, who’ll also whip up a custom beginner’s kit for less than $30.