If you can get a section of PVC pipe around a carabiner (more on this latter) and zigzag spool 550 or tethering cord around it, you can use the carabiner to attach to the outside of your pack when not needed, and either spool from your pack, or detach it and use from the spool. Heck, you could even hold the free end, and use the carabiner spool as a weight to throw over a tree for things like hanging bear bags.
The oval and D shaped carabiners will have the most room for carrying more Paracord. The diameter of the carabiner tubing should be slightly smaller than the interior spool diameter to reduce wobble and to give you more room for spooled cord.
Cut a 3” section of ½” PVC pipe to use as a spool. Since this won’t fit directly on the carabiner, you need to cut a slit down the center of the pipe. (you can either separate the two halves, or only cut through one side and pry it open and force it around )
If you cut the PVC into two parts you will need to use duct tape to secure them back together.
No matter which way you use, ensure the pipe then spins freely around the carabiner.
Next wrapped as much paracord on the spool as you can, (probably about 40 feet worth), and still be able to open the carabiner gate just enough to slip it over nylon webbing/PALS/MOLLE attachment point on your bag, backpack, strap, or vest.
FYI, the paracord listed above is a new paracord product. I plan on doing a full review, but it is not regular 550 cord, this is 750 cord – meaning it it’s breaking strength is 750 pounds, and like the original cord it has the smaller inner strands that you can scavenge to make things like fishing cord – its mil-spec 550 cord – but better….
I hope this is useful to you, and I look forward to hear how you use this project.