It’s not a big stretch from a “sweetpea pod” to a “pyramid pod” – the pyramid is based on a similar idea – instead of sewing the two side seams in the same direction as I would for a flat bag, you sew one side seam (closed zipper end) with the zipper in the middle and the second (the open end) with the zipper at one end. I made this pyramid pod (on the left) with a double zipper tape but I still have to experiment to figure out how to construct it with a single zipper tape (the way I did the sweetpea pods).
The two bags on the right were sewn with a single zipper tape. To use this technique (with the zipper top stitched) I had to finished the seams within the bag, rather than concealed by the lining. However, if I don’t top stitch the zipper, it should be possible to make the bag with concealed seams – have to try that next.