This corner in my lawn is looking for a small fruit bush:

Details:
- Area: 4 by 5 feet.
- Max height: 3-4 feet.
- Sunlight: full day. In some years, when the lychee on the right side grows, this corner will be shaded by the last few hours of the day, but still plenty of direct sunlight.
- It has to be evergreen.
I'd be looking for something similar to the size of a kumquat, in fact, this would be ideal, but it's pretty hard to get here. By contrast, limequat is available at most nurseries, but I don't really like it.
Another choice might be a blueberry, but I think this spot has too much direct sunlight for it.
I had even thought about some potted strawberries, but I don't really like this idea.
What else comes to your mind?