You May also Use Sponges as Ice Packs.
It could be challenging to keep food fresh and cold at the same time. An ice pack may be prepared in a matter of minutes using only a few components. Fill a sponge with water, and you’re ready to go. After that, put the sponge in a freezer-safe plastic bag and freeze it.
The coolness of the frozen sponge is maintained for a significant amount of time after being removed from the freezer. You should use a sponge that is fresh and clean, and you should store it in a plastic bag that is airtight.