I recently ran into a bit of money and spent a few months trying to come up with something good to do with it, until I realised that I'd managed to bloody drink it all. If you really want to guarantee a degree of stability and potential growth, buy gold. It's the only thing that you can rely on to retain value with any amount of certainty. I'm not an economic expert, but the way things seem to be at the moment the best thing to do for everyone is for you to spend which helps growth, instead of hording the money away which is one of the economy's problems currently. I think we should just trade in gold to be honest...
Balls to it, popular opinion seems to have established me as completely wrong! I retract my apparently ill-informed suggestion.