Better packaging for Shampoo and Conditioner bottles so people know which is which if they can’t read the label. Different shaped bottles for each, it can be a small difference.
Also, packaging for sugar vs sugar-free sodas, and other items. Not only for the average consumer, but also people who are severely sight impaired, even using braille on items.
The population is aging, and we lose our reading sight as we age, and we don’t wear glasses in the shower. I have friends who put hair bands around shampoo bottles.
Many manufacturers use color coding, but a percentage of the population is color blind. Actually, shampoo they don’t use colors coding usually between shampoo and conditioner, but it is used for things like soda, milk (whole vs skim and 2%) etc.
Could also use braille for kosher, vegan, pareve, vegetarian.