10 gram Gold Bars
Instead of buying silver, which can become bulky if you are buying large quantites, many peole prefer to buy the 10 gram gold bars. In Zimbabwe the monetary system has broken down and the people have lost faith in their currency. Their society has reverted back to exchanging gold as a means of exchange. Indeed, it takes about 3 gms of gold everyday to survive their, so a 10 gram gold bar would serve you well as a means of monetary exchange in case of a systemic currency collapse.