Skull

A skull is not really necassary, a polished skull may impress people and work as a great paper weight

Ingredients

Without a supply of proper ingredients
the would-be Wizard will find himself
unable to perform even simple spells.
Keep quanities of Eye Of Newt,Toe Of Frog
and freshly ground Unicorn Horn at the ready.

crytal ball

a crystal ball,magic mirror,or other scrying device will prove invaluable in
ascertaining what future may hold and can also be useful in communicating
with other wizards over long distances.