A common feature of libraries, archives, and museums (LAMs) is that they maintain and develop collections. However, the content of the respective collections has changed and broadened over time. Public libraries increasingly deal with other media than books. Pictures and sound recordings have been incorporated more and more into archival collections. Museums have increasingly prioritized intangible cultural heritage. Furthermore, while LAMs have historically been associated with their collections, they have also come to encompass more than just their collections – for example, the use of dioramas and reconstructions in museums and the increased use of workshops, makerspaces, public debates, and other kinds of events in libraries. Key questions to be addressed are: In what ways and to what degree are modern-day LAMs constituted by their collections, and to what degree by other activities and media?