If you a long time reader you know that we take backups very seriously. We usually talk about the backups you have to do to your data at home, but it is equally important to backup while on the field.
Of course you can lag a laptop and a card reader and copy everything over, but if you want a small and slick solution, instructables user blorgggg shares a hack that will give you unlimited storage and easy redundancy (i.e. have each memory card backed up to two or three locations and stored in separate bags).
blorgggg went on a month-long trip to Madagascar and needed a solution that is low-power, stores lots of data and can withstand intense jostling. This is what he came up with.