My solution was to divide items
into clear sections. Then, I color-coded
them based on their category, and arranged them
alphabetically with highlights for where each
first letter starts and ends.
Common items are highlighted
in bold, and each larger section has a page-border
color coding system so cashiers
can find the right section more quickly.
Now, instead of searching through all fruits,
vegetables, roots, herbs, etc. a cashier can check
the produce, find it's corresponding color and
letter, and find the right PLU code in half the time.