Just about anything you can think of, we've provided inspection equipment for it...

Toothbrushes, drink bottles, oil bottles, more labels than you can imagine, pharmaceuticals, credit cards, fast food packaging, retail packaging, wine bottles, liquor bottles, beer cans, injection molded plastics, IBM bottles, insert molded bottles, cosmetics, raw foods, countless barcodes, and many, many more.

Hijacking to post another example. I know from a previous work experience that automated dye-penetrant inspection (https://en.wikipedia.org/wiki/Fluorescent_penetrant_inspecti...), using CV for the automatic detection of indications, has been used in aerospace for at the very least 15 years (and quite likely much more).