If you google "packet pockets", you will find these little items, which the Container Store used to carry but didn't come up this a.m.
We have them in the upper cupboards of the galley, attached with small screws, and they are very handy for small items. Also use vertical wall space.
You can attach with 3M mounting tape, being sure to clean your surface good.
We also found a small, tension-rod, corner, basket-type organizer for the corner of the bathroom beside the toilet. Works very well, holds shampoo, etc.