Yeah, there might already be some of those tiny things hidden (stabbed) into the blanket they're wearing, if we're all being honest with ourselves.

But the ones currently in Phalanx's palm are being held reverently. And when Robin asks about them, Phalanx looks momentarily surprised to see him there, but quickly catches up.

Words are still a little too much to put together. So, when Phalanx looks excited and lifts their hand a little to show Robin, there's just an enthusiastic, "Mm!"