I imagine it would be hard to protect your US business, but distributions you make from it (salary, etc.) could be spread across a number of currencies and precious metals.
There are foreign banks that are still open to US citizens (FBAR is bullshit) that are properly capitalized and offer account in multiple currencies. (St. Lucia is a popular destination). ..meaning you could deposit in US dollar but convert to Swiss Franc. I don't know of any US banks that offer this.
I trade Gold ETFs daily, but in a collapse I feel like these would be the first to go. If you're wanting to spread and hold precious metals, there are services that offer vaulting/storage for a nominal fee and you are allocated the metal, as opposed to shared paper allocation.
Having capital wrapped up in assets is also an option during hyper inflation. A guy I met who went through Zimbabwe's period of hyper inflation said he would get paid for a contract and by the time the money arrived at the bank it already lost 5%. He said people often purchased luxury assets (i.e. new Benz) on payday to lock in value. Nothing like storing your life savings in a tarped Ferrari. lol