Dear Deep Closets,
My home is 30 years old and I have several deep cabinets, closets and pantries. The best thing that I have found and use myself are these, Pull Out Cabinet Organizers. They come in all shapes and sizes and I am sure you can get them at other places besides Home Depot, that is just where I have gone to get mine.
These can really start adding up the $$ fast, so an alternative would be: Under your sinks, using the cleaning caddy’s or for cabinets maybe some kind of basket that you can pull out to see what you need to get to. I had to do a little every month to get all the pullout organizers that I wanted.
I hope this helps…. Neat Freak Texas