Despite the spare, airy atmosphere, it’s easy to get lost in this curiosity shop. Browse the shelves lined with Rubik’s Cube clocks and retro T-shirts and stand around the center table, flipping through what has to be the city’s best collection of arty coffee-table books. Note that the associated art gallery, which hosts contemporary exhibits by local and visiting artists, has moved to 3049 22nd St. at Shotwell, in the Mission District.