I have developed a set of posters for my S3 dojos, which I will make available under a Creative Commons license. The posters work well when printed in A1, for larger groups A0 might be a better choice.
The first poster I want to share is a poster about the Cynefin framework, which is very helpful at the beginning of a dojo to introduce participations to the concept of complexity, and to explain why they are typically using the wrong toolkit in their organizations when addressing the problems they are facing.
Also there is a poster (in German) with all the patterns of the latest (so far unreleased) set of S3 patterns:
