Designers will increasingly be facing the challenge of creating context-aware or ì smartî productsóeveryda y objects that have embedded computation, sensing, and communication capabilities. Smart-Its is a prototyping platform for creating such objects, that is being developed in a European Union research project. A Smart-It is a very small computer equipped with wireless communication and a set of sensors. We describe how we approached the design of future user experiences and interactions based on the Smart-Its platform. Using scenario-based methods to support collaboration within a multi-disciplinary working group, we developed innovative demonstrators of how ì smartî objects support dynamic usage situations and new interactions in a restaurant setting. A group of designers were invited to provide feedback on design aspects of prototyping with Smart-Its. We found that our prototypes and design materials stimulated creative speculation about future interactive products.