The berry-picking stuff has been done to death — and I haven’t even gotten to blueberries and tubers — but here’s an idea that ought to be pursued. What is the evolutionary and genetic basis of different ways of buttoning shirts? It’s a consistent pattern, has been that way for centuries, so by EP logic, there is surely a button-handedness module or gene.
Once they’ve figured that one out, they should get to work on pockets. That’s an infuriating sex difference.