Case Logic makes a nice backpack for carrying laptops. ~$20
Just buy it and get 3 tubes of tennis balls to stuff in the small pocket in back.
Start sleeping with that. (near impossible to sleep on your back where most folks get all their OA's)
I hate it but I use it!
The difference is dramatic.
with = 0.6 AHI
without = 5+ AHI!
Crude, Simple, Effective!