Last night’s refuge had a big pot I could melt snow in. I then either boiled that melted snow for food and drinks or I filtered it for today’s drinking water.
No pot here so I needed to find something to hold the snow. Ziplock food bags to the rescue. Happy I had my coffee pot along so I could melt snow for filtered/boiled drinking water and eat and drink from my mug/cup at the same time, which was handy since I needed to eat supper!