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
Also nobody knows how to light a fire anymore so if you're thinking SHTF then stock up on BIC lighters...also cigarettes.
I learned this the hard way
Actually there was the one time one made it all the way until the end of the drier cycle before I noticed it and it didn't explode but it did work (didn't try it straight away, letting it settle felt safer).
I left 6 lighters in my car and they all died