Lori Gardner spent three years on "The Diamond Bathtub" project, attaching exactly 44,928 rose pink Swarovski crystals to a quite traditional claw-foot bathtub. According to Gardner, part of the fun is to discover the single diamond among the crystals.
It certainly isn't my taste, but neither was the Shoe-tub. Have to give the creator some credit, appears that no space was left bare!
For a cool $39k, you can have one of these, too.