Alas, I do NOT have a sewing machine.
But, I could see taking this same design and tweaking it by using DUCT tape and webbing and some glue.
Barge cement would be tidy and plenty strong.
And, GORILLA GLUE makes a "fabric" duct tape that rocks! Thick, strong and sticky. Highly recommended.
- ALSO -
I've been backpacking for a buncha years, and I have ended up with a rubbermaid tub full of little stuff sacks and pouches with zippers. Anybody reading this probably has accumulated a similar pile of cute stuff.
I think I could rig up something out of this tub to work nicely. I worry about bush-whacking thru noth cascade devils club with an alock-sac being so vlnerable to theose prickers!