Well, I think it would be pretty hard to add anything like a tarp for shelter to your sheath kit. <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" /> My thought was to use the knife to build a shelter. To aid in this, I think it would be good to add as much 550 cord to your sheath as you can comfortably carry.

Remember, each foot of paracord = more than 8 feet of cordage. (sheath plus 7 inner strands) The sheath has a 200 lb weight limit and each inner strand is 50 lb limit. I said more than 8 feet because each inner strand can be untwisted for even finer cordage, but it would be pretty weak.

Another tip is to replace the laces in your shoes/boots with paracord. I did that with my Mom's tennis shoes. That way, if you need emergency cordage, you can salvage the inner strands, but leave the sheath to tie your shoes with. That way you always have some good cordage with you.