I had to share a hack that the nurses used in the maternity ward. They made ice packs out of diapers!
They opened a Pampers Swaddlers disposable diaper (since they had lots on hand), poured ice cubes inside between the layers, and then folded the top over and used the tabs to secure. This made a ice pack with a really soft, comfortable surface that absorbed the moisture as the ice melted. It also stayed cool for a long time.
I'm using this trick at home the next time I have a need for ice packs!
A more comfy alternative to my usual: a bag of frozen peas.
Anyone else have an ice pack hack?