You will need a large, deep bowl made from glass, brass or silver. It must have a smooth and even rim.
You must set your base on some sort of tripod for best results. A tripod made of laural boughs is the best.

You will need to do your own testing to find out which bowl works best for you and how much water you should use. Do not use water from a tap. Get clean, fresh water from a stream.
The ancient Greeks believed that nature spirits dwelled in fresh water. The water may be stored in a vessel and used again.
However it is a good idea to replace your water once a month. Never collect the water of a day time. Water should only be collected at night preferably on a full moon.
To make your wand use a branch from a bay tree, hazel tree or the laural. The end of the wand should be covered in dry tree sap or resin.

Dip the end of the wand into the water until it becomes wet. Wet the rims of the bowl.

The best time to scry is at night when it is quiet. By gently drawing the rim of the wand around the bowl it will cause it to resonate.