Lockster
Lil-Rokslider
One benefit of a hammock that is often overlooked is that in the middle of the night, when its freezing cold and you wake up needing to pee, you can just fold back your quilt, roll onto your side, hang out over the edge of the hammock and have a pee without even getting out. I remember the days when a call of nature meant getting out of my sleeping bag, putting shoes on, shivering in the cold air.... I haven't had to do that for years.