Cymatic is a study area of vibrational nodal phenomena. The term is coined in the field of physics. It refers to the analysis of nodal movements in non-conformal media, such as fluids and grains, generating temporary geometric patterns determined by three significant factors: water volume, light and sound. This research will show some design practices in the form-finding design process in temporal spaces, using geometric concentric patterns obtained from sound stimulation known as cymatic. Stages of recording, analysis and digitization of sound stimulation in volumes of water into small containers with different materials and shapes. The sound registers and its correlation of cymatic phenomena includes traditional building techniques and technological aspects, such as parametric design and 3D printing. Preliminary results illustrate the innovation process on ephemeral space and design objects, considering areas related to art, science and technology. Methodology approaches are mainly based on Research Through Design and it will show some preliminary results about cases of study: Ico-cymatic backstage ; multipurpose ephemeral spaces for art installation. It describes an ephemeral icosahedron shelter built with hybrid vernacular reciprocal structures made with Chilean bamboo and covered by membranes.The following experiments established the causal relationships between sound stimulation and processes of self-organisation of states of matter reflected on surface tension of bodies waters, and it will show this nodal phenomenon as an alternative source of inspiration for design process.