A toy typically has a few ways to play associated with it. A cardboard box, on the other hand, now that's where the creative fun begins!

If anyone needs a primer, I suggest starting with the existing literature, namely Calvin and Hobbes.

http://www.gocomics.com/calvinandhobbes/2012/05/28

https://riteshjsr.wordpress.com/2010/05/22/recurring-motifs-...