Go and look up Books In Print at any bookstore; it's a massive multivolume work, indexed by author name.  You can easily find several books written by someone with the exact same name as you.

    Buy them, and adorn your office or study with "your" books!  For example, I always thought that my surname was pretty unusual, but there is a whole page of "van der Linden," including three different authors also sharing my name!  I selected "Squatter Settlements in Karachi," which is strange and obscure enough for even me.

    Buy several copies of the work and give them to your friends as Christmas presents.  You can even autograph them for added amusement.  When disbelievers comment on your hitherto-unknown literary talents, intone a meaningful hollow laugh and point out that you have many talents that you have not yet revealed.