Computer bags and USB sticks dominate this category.  Backing up and file storage are now extremely important in our busy lives so every person has enough storage capacitiy for hundreds on encyclopedias (remember them) of information in their pocket.  No mobile phone or ipad is complete without a case or other accessories.  Everything can now be branded irrespective of its size or shape or the type of material it is made of.  Our love affair with computers and telephones will continue so why not encourage it with your own range of branded accessories and other items.