Locals took ordinary peppers and grew them in a way that resembles male genitalia. In recent years, the local government in Barcelona put restrictions on merchants' ability to sell tourists trinkets and other mindless goods along the pedestrian mall of La Rambla. (Unfortunately, what retailers came up with in response redefines the definition of "innovative."
Check out this latest kit called "Grow a D*ck". Here is the info if you'd think someone needs it!