Tomatoes. Mine refuse to ripen though chillies in the same greenhouse are fine.
Peppers. I can't grow enough for our needs.
Sweet potatoes. Can't grow them here.
Butternut squash. Mine, along with the rest of the pumpkins aren't ripe yet.
Tried mushrooms in a box under the stairs about 20 years ago. Not successful so am not planning to try the logs. In any case we prefer chestnut mushrooms and morilles so I just buy them when I need them.