Here is a picture of their corner cabinet with the door open
Shelf one
I don't know if you noticed on the second shelf a small hole in the box there.
But what really makes this work is what she has stored in her utensil drawer.
It is a simple but extremely effective solution. One quick look at this cupboard map and she knows where everything she has stored here is. She has made it very easy to get to the item she needs by using boxes covered with contact paper that slide out easily. I know how well this system works because I borrow items from this cupboard regularly.
Thanks Mom for being such an inspiration!