apple, strawberries, pear, avocado, tangerine...all good in a salad.
If you chop up pears and apples into sticks, thinner then mcdonald fries, and put lemon juice on them (possibly even soaking them in lemon juice) and then in a salad it tastes good...at least that's what I think it was, I had it at my aunts house years ago, might have been a lemon/lime juice mix.
I don't eat many fruits in my garden salads, but citrus is a common one, either by replacing the vinegar with citrus juices like lemon or orange or by having mandarin oranges in the actually salad. Sliced strawberries is also pretty common. Things like sliced apples and cranberries are kind of common as well.