Ah, cedarwood. Bringing back memories of the scent of wool sweaters fresh from the chest after the first cold snap of the year, cedar protects against more than just moths.
Cedar is associated with protection/banishing and purification, and is also considered to be an aid for amplifying your effectiveness in ritual and acting as a shield during against unwanted intrusions during astral travel or any other foray into dream states.
Sold by the ounce.