The world financial system
Once we tinker with it and break it for good- we bought it
Do you have a job skill workng with your hands? That may become valuable
Used to be pretty good at fixing cars, but not the new ones. I'm also a fair shot, with handgun and rifle. That might be worth more in the short term anyway. Although my shotgun wingshooting skills have gone all to cr@p, and I never was that good to begin with. Guess I'll have to eat deer and rabbit, rather than quail or pheasants. Oh well around here, you'd be more likely to be able to shoot a Turkey vulture than a pheasant or a quail. Plenty of rabbit and some squirrel though.