The recent epistemological and cognitive studies concentrate on the concept of abduction, as a means to originate and refine new ideas.Traditional cognitive science and computational accounts concerning abduction aim to illustrate discovery and creativity processes in terms of theoretical and ``internal'' aspects,by means of computational simulations and/or abstract cognitive models. We will illustrate in this paper that some typical internal abductive processes are involved in chance discovery and production (for example by generating empirical and theoretical inconsistencies through radical innovations). Nevertheless, especially concrete manipulations of the external world constitute a fundamental passage in chance discovery: by a process of manipulative abduction it is possible to build prostheses (epistemic mediators) for human minds,by interacting with external objects and representations in a constructive way.In this manner it is possible to create implicit knowledge through doing and to produce various opportunity to find,for example, anomalies and fruitful new risky perspectives. This kind of embodied and unexpressed knowledge holds a key role in the subsequent processes of scientific comprehension and discovery.The paper describes some of the ``templates'' of manipulative behavior which account for the most common cognitive and epistemic acting related to chance discovery and chance production. The last part of the paper is devoted to illustrate chance discovery from the perspective of dynamical systems. Chance discovery and production can be viewed as a kind of event related to the transformations of the attractors responsible of the cognitive system performances.