I use the cases/pouches from Eagle Creek and Lewis & Clark, they can be color coded, see thru, etc. But they aren't cheap, on sale they still cost five-six bucks and up for bigger sizes. They are good for electronics, cords, toiletries, office supplies, and more.
At the other end of the spectrum, I use ziplock-type bags a lot, too. From the Target kind which are only good for one use or two, to the freezer bags from Glad and Ziplock, which can be quite tough and long lasting.
daloosh