This was my first DIY project so I kept it simple. I converted the stock Hennessy stuff sack into a bishop bag via the addition of a fabric-reinforced hole in the bottom of the bag.
I attached two pieces of canvas together: one piece inside the bag and the second on the outside such that the nylon of the bag is sandwiched between. I then used my wife's sewing machine to add a button hole to the center of the canvas pieces.
The final result won't win any beauty pageants, but is definitely functional!
More pictures in the gallery: http://www.hammockforums.net/gallery...imageuser=9323