You can eat strawberry leaves. In fact there is a belief they might help with arthritis due to the caffeic acid they contain. It is a diuretic that helps remove fluid from around swollen joints. Not sure how they taste, though. And I’ve never heard of peeling a strawberry. The skin is so thin that I would think you would mush the berry before you were done.
Orange peel – I have eaten it and it isn’t bad. It has a slightly bitter taste that isn’t overpowering and it seems to have a slightly spicy bite to it. But it’s good. The only problem with orange peel is that it might retain pesticides that were used on the trees and trying to wash the peels might not be good enough to get rid of it. The peel is thick enough that it protects the fruit inside, though.
Dandelions comes to mind on foods that people don’t typically eat. Yes, some spring mix varieties have dandelion leaves in it. But pretty much the whole plant, from the root to the flower is edible and pretty nutritious.