Polargrams

If you're one of the millions addicted to Instagram and the retro-inspired photos it creates, a new service from Firebox will be right up your street. It prints out your favourite Instagram snaps in the style of retro Polaroids - and for a fraction of the price too. You even get a free Sharpie pen to scrawl your note at the bottom of the shot, old-school style.

Of course there are a growing number of ways to retro-fy your shots using your mobile phone - here's our pick of the best out there.