Piperoids.

I bought these for our friend Kev a couple of weeks back, from Kinokuniya - the famed Japanese pen supplier - in New York city.

They're cardboard tubes you fold into robots, and these ones were constructed by Tom and Alex, Kev's twin boys.

Here they are before (top two far left):



According to Kev, the one on the left, Mantis Hurry, is saying 'aw shucks', the one on the right - Muscle Jaw - is reaching for a biscuit.

Brilliant.

http://piperoid.jp/en/index.html