Basic shapes - Your sig must contain basic shapes like circles and squares.
Two Sigs - Two sigs in one. A sig that contains (parts of) two sigs that are separated somehow. (with a line for example).
Anime/Manga: Mushishi - Your sig must feature a character from the series Mushishi.
Anime/Manga: Samurai Champloo - Your sig must feature a character from the series Samurai Champloo.
Video games: Prince of Persia - Your sig must feature a character from the Prince of Persia series.