Storage plays an important role in domestic practices as a banal yet essential means of practically accomplishing ‘living together’ and caring for people and material ‘stuff’. However, storage and stored things also occupy a provocative and paradoxical place in debates around the sustainability of household consumption. Driven by renewed popular and scholarly attention to ‘decluttering’ and eschewing anything that does not ‘spark joy’, this paper considers the emotional and practical implications of generosity–as both concept and practice–in articulating the sustainability potential in storage and stored things. In so doing we problematise assumptions about ‘clutter’ as unsustainable. Drawing on vignettes from two projects concerned with material consumption in young adulthood, and drawing on–but going beyond–extant framings of geographies of care, we illustrate how shifting spatial and temporal ambivalences of storage mediate opportunities to engage in and with different scales of generosity. We argue that spatialities of storage are often less about deferring acts of divestment than they are a space in which to situate materialisations of significant emotional, care-ful(l) connections. We reflect on the implications of storage for sustainable consumption in the home and suggest how future work drawing on geographies of generosity might enrich our understanding.