This document is a teacher/facilitator manual for a workshop on co-creation (duration 1.5h). The manual has been designed for a setting in which students support each other’s research proposal design. This set-up (content and schedule) and suggested tools for co-creation can also be used in various other co-creative settings. The applied methods for co-creation touch upon various learning mechanisms of boundary crossing: Identification to learn to know each other including other people’s backgrounds and interest; Reflection where it comes to walk in another’s shoes and support other participants’ learning; and Transformation because of the intention to co-create ‘1+1=3’ proposals, in the sense that students aim to co-create really innovative proposals, across the boundaries of what an individual student might come up with.