Backbone Bar from paracord fusion ties vol. 1. Takes a while, but this was a satisfying knot to use, and the end result is very neat and symmetrical which pleases me ;) it's got a good amount of flex in it too!
Tutorial for a Woven and Half-hitched Paracord Pouch - having a pouch like this would be a great add-on to an emergency kit in a backpack. It will hold small items, and unravels to be about 30 feet of paracord.