One great ‘green’ project idea for school or home or club is to mend a few clothes – then parade in them:

For something a little more contemporary, here’s some really snazzy stuff going on: ‘Make do and mend’ theme for school’s fashion show | The Hunts Post
And here: Stivichall Primary School – Year 6 ‘Make do and Mend’ project.
And here!
And here are some good ideas on what to do: Education | Repair What You Wear