If you have an ipod, I was going to suggest the same as they are basically a portablestorage device. You can buy a lead from Apple (about £20) that will transfer the pictures from your camera to the pod. It's bloody slow but it will do it. Of course, there could be problems with battery life (as ipods arent good in that respect) if you have no means to plug in a charger.
Camera connector: http://store.apple.com/Apple/WebObje...amp;nplm=M9861
Supported camera's; http://www.apple.com/ipod/compatibil...connector.html
Probably the best bet is a dedicatedportable storage device, especially if the company will pay!