The use of rubber bands and tin foil as drug paraphernalia is often associated with the consumption of certain drugs through a method called "chasing the dragon." This method involves heating a drug on tin foil and inhaling the vapor through a tube or straw made from a rolled-up piece of foil, which is where the rubber band might come into play. The vapor is then inhaled into the lungs.
The drug commonly associated with this method is heroin. When heroin is heated on tin foil, it produces a vapor that can be inhaled for a quick and intense high. The term "chasing the dragon" comes from the way the user chases the drug as it vaporizes on the foil.
However, it's important to note that the use of these specific paraphernalia doesn't definitively indicate heroin use. Other drugs or substances could potentially be used in a similar manner, or there may be other reasons for having these items. Substance abuse is a serious concern, and if you suspect someone is struggling with drug abuse, it's crucial to encourage them to seek professional help and support.