Just thought I would pass along a find I made at Target this weekend. They are Micro S-Biners. I don't have a weight for them yet, but as soon as I do I will update. They were in the bike area and are only $3.99 there are six to a package and look like they would be perfect for under quilt or what ever.
http://www.hammockforums.net/gallery...0229_thumb.jpg
http://www.hammockforums.net/gallery...0230_thumb.jpg