Creativity, an ability for any creative agent such as artists, musicians, and designers, is often inaccurately understood as a gift of an elite few talented people. Since everyone is creative, however, this perception is not always true. By applying several theoretical notions of human creativity including bisociation, lateral thinking, and co-design, this paper insists that creativity may be accelerated when an individual creativity work with group creativity through recombining, transforming or merging individual’s feeling, experience, knowledge into a new combination. Since a collective creativity is understood as a collaborative endeavor among a group of people including designers and ordinary people, combining individual’s thoughts, different experience, and unique expertise would be a critical process to generate innovative and creative ideas. Based on this notion in mind, this paper introduces a method to conduct an effective collectively creative process in a co-designing situation. Particularly, the method will allow people to share, learn, exploit their ideas so that they could have own individual creativity as well as collective creativity in a co-design situation.