Should a country such as Turkey pull the rug (or what's left of it) from under the feet of some Italian banks the dominos will start to fall. That won't be good for most commodities.
Commodities that may be resilient to some of the volatility are those which are strategically important for other reasons. Reasons could include limited supply, politically uncertain supply and no easy alternatives …. stuff that is absolutely necessary for industry whether or not asset bubbles get popped.