I generally assume that characters would get a few items dedicated during their time in the Sept and their Rite of Passage.  I'm not sure if it is a specific rule anywhere, but it is how I've always done it.  A set of clothes (make sure to wash them >:) ) and one or two important items would be allowed, frivolous things not so much.  Though that would depend on Tribe.  The Glass Walkers may find a phone as important, etc.