What items will be considered valuable in a great economic depression? Here's what I think will be:
1. Food - Seeds, eggs, meat will be the most valuable
2. Purified Water - a human essential
3. Livestock
4. Ammo - Never bring a knife to a gun fight
5. Precious metals - Gold and silver will continue to be used as currency
gasoline, medicine, guns, ammo and MRE's or protein bars would be high commodity
cigs and alcohol as well, because degeneracy is always profitable.