Behind the enigmatic term “the suitcase” lies a simple DIY (Do It Yourself) concept : an easily transportable, attractive and readable ensemble that enables the visualisation of a project, evolves with it, and facilitates the involvement of people (co-makers, stakeholders) in the project’s development. All of this, in nothing more than a box with handles. To be more accurate, we should rather say the suitcaseS. As a matter of fact, there is not one ultimate suitcase. There is a potential infinity of suitcases to be built, unique for each project. It is a concept and blueprint of a suitcase, like a box that can be filled and designed according to the needs, capacity and goals of a particular project. It is a versatile tool that can be at the same time a branding showcase for your project, or can be turned into a participatory mapping tool where communities can be involved in the design phase of the project.