Try Texas recreation products. They make some really great stuff just like you mention. Look at the site, and find products online. They sell at Amazon and Frontgate to name a couple.
Patrick,
I owe you a thanks. When I picked up my M5 at the pool store today, I noticed they had a spa pillow and saw it was from Texas Rec. It was cheaper than any of the ones I've seen Amazon or any other store I visited so I picked it up. Thanks for the recommendation.