Maple is a witch who is an apprentice of the elderly witch Syrup, who is found in most of the portable Zelda games. In the Oracle games, Link will encounter her randomly. She will fly into the player, and both you and her will drop items. She then races you to gather up the dropped items.
Maple is able to upgrade her broom to a vacuum cleaner and eventually into a flying saucer, based on how many rupees she ends up taking.
She also has a cameo in the GBA port of A Link to the Past.