This is a culminating task for 3D Measurement. It was designed for Grade 7, but can easily be modified for other grades as well.
The activity is tied to social justice. I did it in conjuction with their unit on global awareness. Each child in my classes had chosen a charity to investigate and raise money for throughout the year. This assignment had them use their knowledge of 3D measurement to create a donation box which they could use to collect money.
The package includes the assignment sheet and assessment tool.