Exploring the potential of whole body in motion is inevitably important for natural interactions. People are expected to use different body parts to simultaneously interact with multiple interactions techniques. Therefore, interactive ecosystems in interactive spaces become a real challenge. We have identified three closely related issues to be solved for better adoption of natural interactions in ambient systems: assessment of anthropometric physical abilities and disabilities, interaction ensembles and orchestration, and finally community-based designing and sharing of interactions. In this paper, we present an integrated concept for realizing interaction in ambient systems using natural interaction ensembles. Interaction modalities from different devices are tailored at runtime to maximize the adoption of interactive systems according to the users’ physical abilities, needs, and context.