The only abiotic explanation of those puffbals I could come with is recrystallization of dry ice. I've many times seen water recrystallized as white puffy balls

The only abiotic explanation of those puffbals I could come with is recrystallization of dry ice. I've many times seen water recrystallized as white puffy balls (a kind of very small hail). Maybe in special pressure/temperature range that also happens to CO2? Almost all of them DON'T look like they have stalks, only spheres laying on ground, but then there is figure 30 on page 29.