Update - 6 Dec 2019
these are some of the initial ideas that I have. One of them is the flat caps with other weapons attached to it.
iteration on how these design can be applied in action.
photo references for the iteration
I scrapped the idea of the cap recently and thinking about a small defensive gadget that civilian may carry around with to protect themselves. I also thought about designing a horse carried waggon but I think I will stick with the small defensive gadget for now.
Brief research on the material such as glass and nails which can be the component to build the gadget and some tools and weapon used during WW1.