Currently we use very few materials for actual crafting.
Metal and plastic scraps being the bulk of whats used.
My idea is to make more things craftable useing items we have access to.
Mining yields: Copper, Iron, Gold, Diamonds, Metal scraps
Oil yields: Crude oil, Refined Oil, Gasoline
Chopshop: yield metal and plastic scraps
Garbage: Plastic scraps
Weapon part crates: Plastic and metal scraps
So lets break down the idea i have.
The above jobs are able to function like they normaly do but the materials you end up with can be used for produceing things such as black market weapons.
200 Iron, 200 copper, 500 metal scraps, 500 plastic scraps, 50 gold, maybe a composite material made from refined oil, combined can make a specific black market weapon.
The better the weapon the more pricey it gets with material costs.
This would give meaning to working a mining job and promote more rp interactions as someone thats running the blackmarket would really want to form bonds with people working that job and would likely pay more than the circle would to get them.
This would make Civilian life more impactful to the community!
Thats just a single example of how we could use items farmed in the game to provide more player interactions.