In Germany, the new cultural center Humboldt Forum (to open in 2019) has become a major site of debate. It will include the contested collections of both the Ethnological Museum and the Museum of Asian Art, which contributed to the negotiation of the role of colonial legacies and their reverberances on contemporary Germany. We took those contestations as a point of departure for the exhibition Object Biographies (2015), part of the program Humboldt Lab Dahlem designed to experiment with innovative displays for the Humboldt Forum. Here we reexamine our research collaboration with the Beninese art historian Romuald Tchibozo that was part of the exhibition. His call for the “decolonization of research” was the central guideline in our museum practice aiming for cosmo-optimistic futures. We argue that focusing on processes and questions engaged by the exhibition project can transform contested museum spaces to enable negotiations on ownership, representation, and memory politics.