Mostly wild blueberries and sometimes blackberries. That was back home on the farm when we would go out into the bush country not far away. We also picked wild mushrooms which grew in our pastures.
Huckleberries I like them because they have a sour taste but because they are so small you have to pick a million of them to get a desert. Huckleberries are also a traditional medicine for treating pain, heart ailments, and infections. Cheers!
Blackberries (from bushes, not trees)! Blackberry jelly, blackberry cobbler, blackberry syrup, and blackberry pie - mmm... mmmm! There's nothing like the taste of a fully ripe (not over and not under), juicy (explode in your hand) blackberry, warmed to perfection by the hot, summer sun. Well worth the hours of crawling over and through the mounds of very thorny vines.
Blackberries. Idiots in Australia planted them over abandoned mines to try to stop people from falling into them, but in the absence of their natural enemies and hard winters, they grew berserk. Almost as bad as rabbits.
Wild strawberries, rarely, but I have some growing in my garden now.
And very occasionally when on holiday in Norway, cloudberries (not in large numbers - firstly they grow only in particular spots so we didn't see many, and secondly I think they are partially protected.)