Modified this $7 thrift store find, a Greatland brand Camo sleeping bag, I think it’s rated to 40 degrees; 72″x60″ size, full two way zipper….. added suspension loops and shock cord channels to the short ends in order to provide me with a way to hang it around my hammock 🙂 since the zippers are intact, I can add another sleeping bag to it and stack them under the hammock to provide me with additional warmth if I need to. .
close up of end on the hammock; showing the bungee hooked into the suspension and the channel cinching the end to prevent drafts 
the underquilt on the hammock, it is pretty comfortable, laid in it for a few hours without needing a top quilt or additional warmth…temps yesterday were high 40s , low 50s I think. 
showing the width of the underquilt, with the segmented channels and the loops, instead of folding the 2.25″ webbing into half, I wanted it flat so that it still can be used as a sleeping bag. 
close up of the channel and the suspension loop
and the tarp shelter, it is a simple rectangle tarp, rigged so that instead of a pure rectangle with open ends, it is similar to a folded Hex shelter with corners being utilized as doors, and using a total of 4 stakes, one on each long side with V guy-lines, and one under the doors to keep them closed; it’s not long enough to cover the hammock suspension..but its enough to cover the hammock itself…
Cascade Tactical 