Disaster preparedness is key to coping and adaptation during the immediate aftermath of a natural hazard, but the majority of those at risk do not feel prepared. In this participatory action research we investigate the use of a participatory design approach to increase disaster preparedness around Turrialba volcano, Costa Rica. We present a case study of two ideation workshops and explore the process, outcomes, challenges and opportunities during ideation. Socio-cognitive dimensions, specifically risk and responsibility transfer, appear to be important factors influencing the uptake of self-protective measures. Challenges in workshop facilitation were of a human, cultural and resource nature. However, the overall process was successful with participants showing indications of empowerment and a number of pressing design opportunities identified. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).