The Athame - usually a black handled, double edged dagger, represents the sheer will of the Witch.  It can be used to cast the Magic Circle and command spirits.  It is the most important tool.

The white handled knife - a small utility knife used to cut, inscribe or make magickal objects usually within the Circle

The wand - phallic in nature, usually hand made from a branch, used to summon gentle spirits and angels whom would be unappropriate to use a dagger.

The cup or chalice - represents the cauldron of rebirth and used to hold the ritual wine which is consecrated by plunging the Athame into the cup representing the union of Goddess and God.

The altar pentacle - typically made of wax, metal or wood usually inscribed with the pentagram.  This tool represents the element of Earth.

The Book of Shadows - This is the book handed down throughout the 'family'.  Each tradition had their own unique book, and it contains rituals, spells, recipes, incantations, etc.  It is written in the Witch's own hand writing.

A scrying mirror - Familiar with the Wicked Queen from Snow White who consulted her magic mirror?  What we use is a black mirror, easily by taking a picture frame (usually circular in shape with a silver frame), wash the glass in a concoction of water, salt and mugwort, then paint one side of the glass a deep black.   You may need several coats to achieve that effect.  When completed, keep it wrapped in black cloth until the night of the full moon.  Take it outside, unwrap it and catch the reflection of the moon in the glass while saying a little invocation to the Moon Goddess.  Then use it for scrying (looking into the mirror until you see images).