The nature and spirit based religion of Wicca. It includes many ancient beliefs but was founded openly as a religion by Gerald Gardner in 1954.
Athame: An alter knife or blade which symbolizes choice and contemplation.
Bat:A night creature with an almost supernatural ability to travel in the dark. In the old days many rituals had to be carried out at night and these creatures would share the dark with the practitioners.
Broom: Used to clean away negative forces and, of course, associated with flight as well.
Cauldron or Chalice: These symbolize the womb (V), and thus, creation.
Fire: Fire symbolizes transformation. By jumping through the fire twice it is used to destroy the old and enflame the new.
Pentacle: A five pointed star within a circle, often called a pentagram and often confused with the Satanic inverted Pentagram. It is said to represent may different things, such as a human within an aura, the four elements plus spirit, or the interweaving of the womb symbol (V) making it a star of life.
Theban: A form of writing, attributed to Honorius of Thebes, which is used by some for the writing of spells. Of course others use Runes as well. (see Runes)
Triple Goddess- This is a very old idea that has not really taken on this name until the past century. It is a common theme within different cultures for there to be three women in positions of power or retribution (The fates, Norns, furies, etc.). The most commonly known within this idea actually refers more to a woman's own life cycle and is the Maiden, Mother, Crone.
These are by no means all of the tools and/or symbolic things within this belief system, but it's a good start.