I finished another nålbound bag! I used loops of grocery bag plastic, and added some embroidery using loops from a different color bag. I learned that doubling the loops makes a very stiff fabric (the base was made as an oval with doubled loops, but is a bit wonky because of the stiffness). The sides were done with single loops thumb tensioned (meaning the loops are the diameter of my thumb) done in Finnish 2+2 with an F2 connection (here is an excellent resource site). The sides are much more flexible than the base, but still sturdy enough to stand tall on their own. (Although I did stuff the bag for the picture.)