Conceptually, I’ve always liked the idea of a post-apocalyptic world without light, where everyday items no longer exist. In such a world, everything a person needs must be scavenged and created by hand.
As the foundation, I took a concept from a game, which I believe fits perfectly for this kind of world. The main element is a machete, crafted from available materials. I also plan to add my own elements and may adjust some details based on logic, but the machete concept will remain unchanged.