As a kid, customizing your bike generally meant getting pegs for your buddies to ride around on, throwing your favorite baseball player's cards in the spokes, or getting pegs for your favorite baseball player Ken Griffey Sr. to ride around on, cause that dude needed to get to Chops somehow. Going slightly beyond that, Fixie Bicycles.
The showroom/ workspace/ home of its owner Mikel, a graphic designer by day/two-wheel enthusiast by always, Fixie's heavy on unfinished concrete and big windows full of its product: stylish, custom-made, city-ready bikes, either fixed gears (rider must constantly pedal) or single speeds (rider can coast), tricked out using Mikel's various skills, from design, to leatherworking, to powdercoating, also what it's called when you give albino Sean Patrick Flanery your jacket. He can craft your horse for as little as $200, starting with a frame (he can source, or you can provide), then customizing wheels/tires, handlebars (eg, sleek track-style drop-downs; super-tight, traffic-slaloming risers), pedals/cranks, paint job, and even handcrafted saddles, including perforated numbers and another that looks like it's covered in tiger stripes, aka a hilarious movie in which Eldrick Woods joins the Army, then texts hookers about how much he wants to pee on them. If you dread creativity, the showroom's also full of his for-sale previous works, including a red/green/white Italian-themed fixie called the Fugettaboutit, the Taxi (a burly, bright yellow old Cannondale), and a slick black/white brakeless model named the Tux, although as soon as you buy it, your buddy's just gonna make you rent a totally different "morning bike" for his wedding.
He's also got a range of accessories up for sale, including helmets, goggles, grip tape, and sweet little LED head/taillights that "you can't get anywhere but Europe, and here", which look like little skulls with flashing eyes -- so, like your boy Ken Griffey Sr., only with flashing eyes.