If you are still looking for suspension related stuff you should check THIS out. It is a four pack of polyester strap (polyester doesn't stretch) tie downs. I use these for tree straps to avoid damage. This package has enough for both you and your friend and it is dirt cheap.
I'd also like to throw in four 1/8th inch amsteel nacrobiners for free as a PIF (pay it forward), two each for you and your less-than-tech-savy friend.
Here is a picture of a nacrobiner in action. What you see is, from left to right, my whoopie sling, a nacrobiner (It's the thing with the bit of yellow on it), and my tree strap (the same ones I recommended above).
As you can see, they are a replacement for carabiners. They weigh next to nothing and work like a dream. Send me a PM if you are interested and I'll get them sent out to you right away.