Junk modelling London Bus with Makedo
lots of cardboard diy ideas here for dramatic play center
customized kidsonroof cardboard house
Take three cereal boxes, tape and wrap them together and... voila! paper storage and possibly even mailboxes! Neat idea.
Home made cardboard robot craft for children (1) http://www.snowingindoors.com/index.php/2013/our-home-made-robot/
Junk Modelling - The Robot & the Dog