Hard to trade shelter, but I see what you mean - but I think those are too low on the pyramid to truly be commodities. I'm thinking painkillers and antibiotics.
Also, skills. If I were truly paranoid, instead of hoarding gold I'd be hoarding friendships with dentists and paramedics. An infected tooth can kill you, and make you wish it wouldn't take its sweet time doing it.
Also, skills. If I were truly paranoid, instead of hoarding gold I'd be hoarding friendships with dentists and paramedics. An infected tooth can kill you, and make you wish it wouldn't take its sweet time doing it.