People will leave zucchini in unlocked cars parked on Main Street in the small town where my wife’s family is from. And sometimes tomatoes.
The tomatoes I would take; I can *always* do something with tomatoes. Currently I have tomatoes canned for soup, cherry tomatoes dehydrated for wintertime use in pasta sauce, cherry tomato salsa and another batch planned for tomorrow (ALL RIGHT ALL RIGHT I AM NEVER PLANTING FOUR OF THAT TYPE OF TOMATO AGAIN), and 27 pints of Awesomesauce, which is pretty much the entire reason I grow tomatoes.
I went to a local small store once and someone had left a whole grocery cart full of zucchini just outside the door with a sign marked FREE