We took part in a cardboard workshop over the school holiday, at the brilliant Museum of Contemporary Art in Sydney. I can't recommend this idea enough; an enormous stack of cardboard, enough rolls of tape to sink a small boat, and some eager participants. Here are the results:

The best part was, no glue and no staples. All I had to do was tear off endless strips of cellotape for the young engineers. Easy.

This is Sonny's school bus.

And an eye-catching masking tape mural; simple and flexible.