I’m all for anything that provides me with extra storage, especially if that thing is inexpensive and easy to install. An under-shelf basket is exactly that. It is a good way to add a sort of extra shelf to a cupboard. Of course, you have to have room for it, which means that that area under the shelf has to be empty for the basket to fit. Be aware that a basket of this type is not ideal for storing anything that can get caught in the wire mesh.
Under-shelf wire basket:
Under-shelf wire basket pictured: InterDesign York Storage Bin, Under Shelf Basket, Bronze
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