I've always wanted one of these, and now I can get one pretty cheap! The KABB Modern Digital Flip Clock is $44, comes with black or white number flaps, and runs off a single D battery. It looks a bit cheap in the photos—I certainly don't think it'll pass for a vintage Bomba—but that hardly matters, as it's just another totem of my anxious and obsessive grasping at nostalgia for a technological age I am too young to have experienced, a timeless jumble of false comfort doomed to be discarded in a convulsion of minimalism that is itself merely another manifestation of the deracinating consumer identities to which we are all measured against and fed to like krill.
Nice gift for dad, though!