Design's at its best when it marries sleek form with purposeful function, e.g., a classic Maserati, or poles. For superlative design and utility in accessories, try SetGo.
Made in NYC, Go's dark-hued mini-line of leather gear is as minimalistically brilliant as a Spinal Tap album cover ("None more black"). The centerpiece is the wallet: a thin ebony jobby sporting 3 card slots, 2 cash slots, a low-cut interior pocket for ID cards, and a similarly low-cut exterior pocket for easy access to your subway card/building entrance card/eyebrow-threading coupon/note to "learn what eyebrow-threading is". For those whose worldly possessions exceed the capacity of their back pocket, Go purveys an over-shoulder bag w/ four internal zippered pockets, two exterior pockets for quick cell/iPod access, and a slim, bandolier construction for pulling off that hard-to-achieve "urban Chewbacca" look.
Go hawks one other item, a laser-engraved keyholder made from forged steel -- the pleasing form of which abets its crucial function: pocket ballast.