Introduction Place is not only a geographic concept. In a place, we recognize and find familiar ensembles of artifacts, people, and spaces through spatial experiences and senses, perception, and movement (Tuan, 1977). It is “a world that is not only perceived or conceived but also actively lived and receptively experienced” (Casey, 2001). Relevant to place, the concept of placemaking - as originally developed by Jane Jacobs and William Whyte - focuses on the ongoing, collaborative, and incremental process of creating and sustaining a place. In this chapter, we investigate how everyday designers can act as placemakers and how this new perspective can further advance our understanding of sustainability in human-computer interaction (HCI).