You will also find business bags that can be carried on trips. This way even when he is way from you he will think of you. A nice logo belt will look really snazzy on him or treat him to a well made quality backpack. If backpacks are not his style, get him a Louis Vuitton keepall. For a smaller gift, give him a nice pair of sunglasses.
(http://www.csbinternet.co.uk/css/custom/base/images/raybanuk.asp)