In this chapter we introduce thinking about thinking as a method that can be used to inspire creative adventures in education and human service work. Thinking about thinking may be familiar to people involved in these fields. For example, there is extensive interest and active engagement in developing, teaching, using, learning from, and researching many types of thinking including reflective, reflexive, diffractive, critical, creative, philosophical, ethical, practical, instrumental, evidence-based, computational, design, and systems. In this chapter we build on and expand the ways that thinking often takes place in education and human services and we foreground other possibilities for thinking in these fields. We describe and demonstrate thinking thinking experiments, and we report on what we learnt and the lessons for thinking in and about education and human service practice. We make the case for making space and having a dedicated place for thinking about thinking in education and human services work. This space and place for thinking should include thinking about the ways that thinking and practice in these fields are not typically thought about or done. It should also be a space and a place for actively engaging with the ever-growing and inexhaustible possibilities of thinking. We propose ‘thinking placements’ as a way of making this space and as a place for this thinking. We also argue that our ventures in thought inspired the assemblage of arts-based methods that we explore in ‘Creative Adventures in Education and Human Services: Part 1, Part 2, and Part 3’. We suggest that thinking about thinking may spark similar creative adventures for readers of this chapter.