I found the kinako puffs! They are at Mitsuwa, which kind of makes sense since they are a Japanese grocery store. I should have checked there earlier!
Having now eaten these, I can say that they are completely unline anything I have ever eaten. They are crisp and puffy and ridiculously airy. If you’re familiar with kinako powder, these are a little sweeter than most kinako snacks (including the one I found at Marukai) but not too sugary-sweet. These puffs are so delicate that they just disintegrate in your mouth with the slightest pressure, but they are so good! They’re also $5 a bag, which gets you 6 pouches with 6 puffs each. It’s definitely an indulgence, people. This is no bargain snack. But they are really good.
There’s also a cheese flavor, which I didn’t buy. I also really like the flavor of kinako, but I don’t know if it’s an aquired taste? T says it kind of tastes like nothing. I think it’s slightly nutty, but very faint. I don’t think it’s offensive or bad, though, in any case. It’s good!
Also, sorry for the poor photos. My iPhone didn’t want to focus, apparently.