I’ve never been one to write on my hands, considering I always have some battery powered gizmo by my side. But if you must write on your hand (as one of my nearest and dearest friends used to do), might as well class it up.
The ToDo Tattoo is a set of 12 temporary tattoos in the form of a “ToDo list” that you can place anywhere on your body. Not only do you get the fancy list, but you get a skin safe washable marker too.
May I suggest your first item on your list. BUY A PDA!