Cheap plastic hand tools that fall apart.
Cheap hose sprayers and wands that fall apart.
Gloves that fall apart.
Expensive wheel barrows that fall apart.
"Kneelers" that are too flimsy to hold my weight.
(There is a theme: cheap tools fall apart quickly and never work well. But many people buy the lowest price item. Every year! I understand that manufacturers would rather make the cheapest thing they can, and then make $10 profit on it every year when people have to buy new ones every year. if they made a better, more expensive model, they might only be able to make $9 profit on it ... and only sell it to me every ten-twenty years.)
Irrigation tubing and fittings where every manufacturer makes them a FEW thousandths of an inch different from every other manufacturer, hoping that everyone in the world will be "trapped" into buying only their parts forever.
Black and Decker String Trimmer Model # NST1018. That ding-dang furshluginer model number is totally WELL-HIDDEN inside the very long, ultra-fine-print "Caution" warning. (can you tell that I recently needed to figure out how to re-string a trimmer that was given to me without any Owner's Manual?)
OK, I'm old and my eyes stink. But maybe a LOT of customers are old.