Earlier Nintendo teased something "crafted for kids and those who are kids at heart" and have now announced this. I can't say it's not interesting, it's actually pretty neat, but it seems a bit damageable (cardboard can be quite sturdy though so it just depends on how well this stuff is put together). The Project Giant Robot-esque thing definitely caught my eye, at the very least.
EDIT: Honestly I'm starting to get really excited about this. I think I'll probably end up getting the robot one. I'll put on the silly cardboard suit and punch stuff as an awesome giant robot.