Does anyone have experience with ad hoc baggery - bags as ongoing DIY? Years ago, going for carry-on only, with a heavy tech load (VR) and thus light everythin

Does anyone have experience with ad hoc baggery - bags as ongoing DIY? Years ago, going for carry-on only, with a heavy tech load (VR) and thus light everything else, commercial bags embodied non-viable design-space tradeoffs. Flying two bags, with varying size and mass constraints, plus wearing layers with pockets, needed to transform on arrival into something like one comfortable heavy backpack with an excellent waist belt. "The pack frame can be my 'portable workstation'" is... not a well-served commercial niche. Maybe someday we'll upload bag designs for rapid prototyping, but not just yet. And just a good COTS waist belt could blow the volume budget. So, build-a-bag. Sort of the "backpack = dry-bag + straps" concept, but dialed up. As in "dry-bag = nylon-sack + plastic-bag + shaping-strappage + backups", and "straps = vecro strips + strapping + TSA-compatible adhesive + ...". Etc. Core of weight belt became a form-fit layup of velcro. Which hooked into the laptop, with velcro pads on it's back to support a frame shelf. And so on. Life deflected me from travel before it was used much, but for a heavy pack, it trialed comfortable. And became two nylon packable shoulder bags for carry-on. I was pondering combining TSA-acceptable selfie sticks with wheels. Again, not used. And bouncing around with luggage would have been bad. And very not "It Just Works" - travel/life as DIY engineering exercise. And it could look odd. But even with now relaxed tech constraints, I'm tempted to try something similar someday. So, has anyone attempted/survived/considered/seen something similar?