This straight forward Design brief is intended to allow students to apply their Isometric and Orthogonal drawing skills and I would suggest if going through my earlier lessons on Isometric drawing to support this first (if students don't already have this knowledge). (also possibly the worksheets where students read orthogonal drawings to translate into isometric)
It would suit Materials Design as well as Visual Arts. It is particularly intended for Visual Communication and Design and offers the opportunity for students to develop their skills and understanding for product design.
It includes an "advice to teachers" page which details the design process that I take students through.
There is also a Design Process pro-forma resource which is created with this brief in mind, as well as some of the First Three Stages of the Design Process which actually feature this brief.
I believe with all my heart, there is no greater motivator for students than a design brief. (this is also true outside of the field of design) - If students have a clearly defined problem to solve and the means to do it, but the final outcome and process includes room for their own innovations, they will be motivated!