A couple of 10' lengths of polyester webbing (not nylon!) works pretty well. I use this with an ENO singlenest for day hikes where I want to hang for a bit and chill. Use a marlin spike hitch and clip directly to it with the carabiners... quick and simple.
I also have recently purchased a set of Atlas Straps to use with my camping hammock (Hammock Bliss no-see-um that I converted to bunched end+carabiners) and I am very impressed with them. At first glance they might seem pricey, but when you consider that polyester webbing costs more than the nylon used in cheaper straps, part of the price premium is justified. I don't regret the money spent. Just my .02 worth.