The following research records the functionality of collections of wealthy individuals in an effort to clarify the current system of collection categorization. Although many functions were indeed possible, this research will be restricted to the discussion of collections in which objects reveal the collector’s devotional, social, and intellectual curiosity. These classifications reflect the most prevalent themes initiated by my research on collections of royal and affluent collectors during the Early Modern Period, and as such are the three most rational means of discussing collections as functional, working, tools.