Cal. Health & Safety Code § 11014.5
(a) “Drug paraphernalia” means all equipment, products, and materials of any kind that are designed for use or marketed for use, in planting, propagating, cultivating, growing, harvesting, manufacturing, compounding, converting, producing, processing, preparing, packaging, repackaging, storing, containing, concealing, injecting, ingesting, inhaling, or otherwise introducing into the human body a controlled substance in violation of this division. It includes, but is not limited to:
(7) Objects designed for use or marketed for use in ingesting, inhaling, or otherwise introducing cannabis, cocaine, hashish, or hashish oil into the human body, such as:
(c) In determining whether an object is drug paraphernalia, a court or other authority may consider, in addition to all other logically relevant factors, the following: