He sits on your head
Based on the StreetPass Mii Plaza getup, Nintendo is going to distribute a real life Kirby hat early next year. It’s only available in Japan for now, and will start hitting stores on February 25. I’m surprised it took this long, given the popularity of the Mii Plaza metagame — maybe we’ll see some real life Badge Arcades in Japan soon?
Given the long reach of Kirby merch, you can probably expect this to come west at some point, though you can import it from Play-Asia for $30.
Kirby hat from StreetPass Mii Plaza to be sold in February (Japan) [Nintendo Everything]