Icing an injury

[Eden]

This product is a bit pricey and not shoulder specific, but does offer a solution for not having a freezer - they offer a bottle that keeps the cold pack frozen for up to 6 hours. http://www.gomoji.com/products/moji_to_go/2.php

they only offer knee and back specific products right now, but they are pretty cool (I've tried on the knee model - its comfy).

My other thought was if you are driving you could possibly strap the ice pack to the car seat rather than trying to put it on your body and still get some decent icing in, as long as you don't sit slumped.

[NadiaMac]

Can you get ice at the gym? If so, all you need to ice is a suitable plastic bag

I ice my shoulder in the car by lashing it on with an ace bandage. This is a bit tough to do by yourself, but doable. You need a long, wide ace bandage

[beccaB]

A physical therapist told me to ice my elbow tendonitis with a dixie cup that I had frozen water in-then peel some of the paper away and rub the ice in a circular motion until the area is numb. It seems to take less time than sitting with an ice pack. I did that to my knee and I got hives. Weird. It might be hard to reach your shoulder that way, you'd probably have to get someone else to do it.