I used a Zenza Bronica lens that I picked up on Ebay, a rubber steering bellow and a body cap to make this Do It Yourself Tilt & Shift Lens for full-frame sensor. The design is based on Jan Christian's project here. Please see three photographs I took with it at a shopping mall this past weekend. The shooting experience turned out to be a nice workout for my left forearm.
UPDATE, I took this portrait with the same lens: