Question: Make an ice-pack that won't drip
Options:
Place a water saturated sponge into a freezer bag, then freeze. When the ice-pack melts, the sponge will hold the melted water and not drip.
Place a salted sponge into a freezer bag, then freeze the bag. When the ice-pack melts, the sponge will hold the salt and not spill or drip.
Answer: Place a water saturated sponge into a freezer bag, then freeze. When the ice-pack melts, the sponge will hold the melted water and not drip.