This keeps popping up in the chatter so I will make a thread for it.
1. Take a walk in a natural place, find a piece of wood you feel drawn to and take it home
2. Scrape off the bark(or leave it on if you prefer) at this time you can also sand the wood to leave it smoother
3. Customize it. Remember, this is your wand. There are no right or wrong ways to do it. You can add gems, cords, beads, metal, or anything else that floats your boat.