I know there is a newer version of the waha papercraft, but I found these a while ago while browsing through some japanese sites.Enjoy!
a waha 'sumo' game... I think you play with it by tapping on the table. (I saw the girls on Ichigo Mashimaro doing something simalar, so I'm making a guess...)
and of course, for whose who missed it, the newest waha craft (sorry, the creator's name escapes me at the moment... ><; )