The primary way of generating knowledge in archaeology is through its collections and archives of objects of past cultures and societies - as was and still is stated quite often. But archaeology has been struggling with the sheer masses of objects since, which steadily grow because of excavations. The following seventeen articles were contributions to a conference in Berlin in 2013, which was organized by the German Association for Theories in Archaeology. This edited volume focuses on two general topics. The essays in the first part of the volume treat the virulent problem of objects stockpiling in collections. The history as well as the psychology of collecting are addressed. There is a focus on the development which began with a passionate, subjective delight in collecting but which moved towards a regulated, institutionalized burden of collecting . However, alternatives which lead to a self-conscious practice of de-collecting, are discussed as well. The contributions in the second part of the volume deal with the established empirical-antiquarian research in the light of the material turn and also show the complexity of the relationship between humans and objects. Last but not least, this volume discusses current attempts at the understanding of objects in other disciplines from an archaeological perspective.