Lots of great ideas here... If you use denim, use deep seams... at LEAST 1/2"!! the denim tends to unravel.. I don't have a serger, but before I make another denim dog bed, I'll ask my quilty friend who has a serger to let me use it? I don't really know if that's possible, but the dog bed I made from old jeans unravelled pretty quickly!
Thanks for the links!!!