quick to do an emergency
but very convenient anytime
just take a rope big enouth to not to sew your shoulder..
Step 1: Pillow Case + Bottle Cap
take a pillow case , rectangular works better here
put something in the corner at the bottom, i took a piece of paper and made a ball, a good solution is a bootle cap in cork
Step 2: Piece of Paracord or Whatever Rope Ya Want
for the bottom side noeud coulant / slipknot
that will hold the ball/cap through the fabrik
on top,bring the fabrik together and pass it into a noeud de cabestant / clove hitch
work a little to have the good length on the both side
you can although keep an extra length of rope to pass as a belt , that hol on other side with a bowline knot on the 'ball'