The name says it all. Armelle Vetillard created the Carton Chic collection of cardboard toys - all made of recycled or recyclable cardboard. The dollhouse is made up of eight pieces that fit together. Pre-prtined graphics detail corridors, a swimming pool, and a helicopter landing pad. The dollhosue can be put together anyway your child likes. The other side of the cardboard pieces are plain kids can use their imagination to design what they want.
Carton Chic also offers this Rocket Size Meter. It's a fun growth chart you can affix to the wall.
Finally, check out this reversible Theater. It shows a flat screen on a stand. Pop out the TV screen and your child can put on endless performances. Reverse the Theater and it's a play kitchen! All of Carton Chic's designs disassemble easily and store flat. (via Minor Details)