Have a spare baking tray? For a simple trick, gather the small items that are harder to reach from the back of the cupboard onto a tray, and then treat it like a drawer, carefully sliding it in and out for easier access.
Airtight (well-sealed) containers made of plastic or glass let you see quickly how much of one ingredient you have left. These containers also protect dried goods from humidity and pests. Whether they match or not, containers can be displayed on the counter or up on open shelves in attractive ways that can actually decorate a corner of your kitchen.
Here's an innovative way to make the most of your typically unused space, like the back wall of the inside of your medicine cabinet. Side note: Make sure to bring your tweezers and nail files to the store with you to ensure that they'll indeed stick to the particular magnetic strip that you plan to purchase. Or you can just super glue small individual magnets to the wall instead.