I’ve learned that it’s best to pack multiples of needed items on the theory that one or even two will be misplaced or lost or God forbid damaged before the journey ends. So I’ve got two Mac Powerbooks w/ cords and connectors for each, two digital cameras, four power adapters, four combs, four reading glasses, four sunglasses, four 3D glasses for glare reducation, etc. It’s not a theory, actually. Somehow and some way, losses (or to be more precise mystifying vanishings) always happen on trips. No preventing this and certainly no understanding why.