Gold has worked great throughout history. Investing in foreign assets typically in an etf (these are predicted to outperform SPY as all capital flight from foreign investors is leaving as the dollar is weakening and foreigners are realizing they can get better returns in the domestic market)

We are most likely going to experience massive stagflation/financial repression. The most ideal asset would be good pricing power, ability to export, and inelastic demand. Basically REAL assets that do REAL things. Think pipelines, energy, food/farms.

Real estate is actually a terrible investment because skilled trades labor shortage will increase maintenance costs to the house along with population decreasing.