Beanlings have tails. Every beanling has one as they are the wish from which they are born. The tail is made from paper or ribbon and has the wish inscribed upon it in magical script (can be scribble-like, or actual writing). They come in a variety of lengths as their wish can be big or small! The tail naturally tends to curl up as it acts kind of like a protective shield for their stumpy bean sprout body, though it can flow in any direction as desired at will. They are by default plain white with only the writing decorating the paper.
Examples of characters with this trait: