You can find anything online. I had a sofa papasan for the longest time I eventually tossed it because it had def seen brighter days, and because I didn't know where to get a replacement cushion. Looking now I found this site, the cheapest I could find to purchase (usually they go for 250.00 or so!). I would be interested if anyone knew how to create one of these suckers though!
I thought about doing that, but didn't have the time to dedicate to it then. http://www.accentfurnishings.com/dorapacu9.html