When it comes to celebrities, it is easy to consider them one-trick ponies. Musicians are musicians, actors are actors, writers are writers, and so forth. But lots of our stars have a wide range of talents, and some are even inventors with patented designs.
While some celebs were awarded patents that don't come as much of a surprise, such as James Cameron and his patents for devices that allow him to shoot special effects, others will likely leave you thinking, "What on earth?!"
Check out this gallery to see which celebs have registered patents over the years.