There's something about building a bike with your own two hands that seems fitting, as they're what you'll use to break your fall when your shoddily made bike crumbles mid-ride. Or, you can make something that's both hand-built and will stay upright, with help from Bamboo Bike Studio's Workshop.
Run by a former K2 design engineer and about to roll into town, Bamboo's a 26ft converted U-Haul bike shop hawking kits with everything needed to assemble one of their six road models (all actually made from road vibration-reducing bamboo), and providing the expertise to help everyone from “12yr-olds to 80yr-olds", though much older than that and any thought of riding should be 86'd. Buy a kit online now (models span an insanely well-priced $750 Coaster, to a single speed, to a high-end Touring joint) and it'll arrive by the time they're in town mid-month; then just show up to the weekend-long workshop with a 2'x4' MDF board, a drill, a hammer, and two adjustable wrenches, and after some hard work, you'll be able to ride it away from the lot -- not the Lott though, as you'll never find safety from Ronnie. Customization for aesthetics or performance is encouraged, and previous builders (there've been over 200) have added Velocity wheels (to single speed track bikes) and drop bars, slapped homemade patches on the head tube, or painted the lugs, just when you thought those boots couldn't possibly get better-looking!
If doing your own thing is indeed...your thing, they assert that the single or 20-speed models offer the most options for customization, though if you're in love with a different model...whatever, it's no skin off their hands.