Here is a pull-down shelving unit made by Rev-A-Shelf--a kind of basket with its own set of small shelves. It is installed inside an existing cabinet, and has a mechanism that allows the user to pull the basket outwards and down, almost to countertop level, for easier access:


A similar product is made by the European manufacturer Häfele:

Häfele also makes a heavy-duty version, installable in almost any size cabinet. It can carry up to 44lbs. of storage:
