Which item is typically associated with heroin use?

The association of spoons with heroin use stems from the drug's preparation methods prior to injection or consumption. Users often heat a spoon to dissolve the heroin, which is then drawn into a syringe for injection. The spoon serves as a key tool in this process, making it a recognizable item in the context of heroin usage.

In contrast, rolling papers are more commonly linked to marijuana use, while vaporizing devices are associated with various substances outside of heroin, such as marijuana or nicotine. Incense typically relates to the use of aromatic materials for fragrance rather than drugs. Therefore, the association of spoons with heroin is due to their integral role in the drug's preparation for injection, making it the most fitting answer in this context.