"Every time you do a project, you learn something new." - Justin Timberlake
So you want to engage your team(s) in a project involving higher order thinking. What project(s) will they be working on?
You can assign projects or let your team(s) select their own. I find participants are more highly motivated when they have a choice but I suggest providing a list of projects from which they may choose. This strategy worked well for me when distributing work assignments to engineers.