It’s so simple, I’m a little chagrined that I’ve not done this to date.
Because, pain. Chronic, all-the-time, Hounds of Hell ouchies that plague my badassery on a level that makes one want to run head first into a wall.
But, my BFF, coffee, nixs that option. Regularly. Because, coffee. 😉
Maybe I’d not cared to make my own ice packs because I don’t like ice packs. They’re too hard, too stiff, too much addition to the pain that requires an ice pack to begin with!!
Not this. Nope. I highly recommend you give this a go, because it doesn’t freeze solid…it “slushifies.” This is totally a word because I’ve only had one java and my brain cells don’t currently function.

Ziploc baggies. I used the freezer bags, medium. I also used two…one for the liquid, a second for “just in case”…
1 cup of Isopropyl alcohol.
2 cups of water.
Food colouring. Couple of drops. Because, colour.
Peeps.
THAT IS IT.
Chuck that sumbitch in the freezer for at least 4 hours and you’ve got your own flexible ice pack.
Modify the quantity for smaller ice packs.
Sometimes? It really is that simple.