TIP: Cheap jumbo ice pack
For those of you still recovering from the price of a large ice pack, I found a cheap alternative.
You will need:
2 large bottles of rubbing alcohol/surgical spirit
The same volume in water
3-4 large freezer bags - don't cheap out here or you will get wet! I use ziplock bags with the double bands.
Pour the rubbing alcohol/surgical spirit and water into one of the bags. Zip up making sure you get as much air out of the bag as possible. Then put in another bag, squeeze out air and do up. Repeat until you have used up all bags. Chuck it in the freezer.
For those of you with an artistic nature you can add food dye to make it a pretty colour