Homemade Ice Pack
If you need a makeshift ice pack or you’re looking for one that’s more pliable than the typical lunch box ice pack, you can use dish soap.
Fill a plastic bag about one-third of the way full with dish soap then pop it in the freezer. The liquid will freeze but not completely. Then it will be cold enough to help with any bruises or bumps, but still malleable because it isn’t frozen solid.