I wear hayanwa "fast rope" bracelets every day, so I made them in different colors to coordinate with my outfits. These bracelets allow 6 yards of 95 Paracord to be quickly and easily deployed with a simple tug.

I was inspired by a video by MeZillch, but with some tweaks I came up with, most notably being a pre-tied handcuff loop for hojojutsu and an aglet to help thread the stopper knot.

ETA: This video shows how to fit 6 yards of cordage in the bracelet.