Meet my new friend:
This thing is great. It is a vast improvement over ice-cubes in a plastic bag. It works much better than a frozen gel-pack on places like elbows, feet, wrists etc. The gel pack is good for large flattish areas, but on joints, I find I need to bandage it down tight to get the contact I want.
The ice bag makes it much easier. I put it to good use on my dodgy right elbow this last week.
In Australia, it can be obtained from the Lecaronol website. They were very helpful.