There have been rumblings in America about the US dollar might get hammered by credit rating companies. If the US does get a downward rating then there could be some serious problems buying shopping, fuel, and other items.
My advice right now is to stock up on bottled water, tinned fruit, tinned veg, and tinned meat. It wont add a huge amount to your weekly shop, and if nothing bad happens you'll have some quick and easy meals, and water never goes amiss.
I have been watching the price of gold for quite some time, and it's risen dramatically in the past week, and right now it's up at $1508 per ounce. Gold is a good indicator of worry in the worlds economy, when stock market traders get nervous, they buy gold instead of trading stocks. This pushes the price up.
Oil is also very high and rising daily, again this pushes up the price at the pump leaving drivers with less money to spend. This then hurts luxury goods sales, causing further problems and a downward spiral.
So heed my advice, it wont cost much and can be used later even if I am full of shit.