Free tomatoes

Due to rather limited space here in the suburbs I am trying to maximize my yield thru raised beds and container gardening. Sadly, my tomatoes in pots and okra in barrels had rather dismal results. My best tomato crop has been from 3 or 4 volunteers that came up in the north east corner. I've no idea where the seeds came from but will happily reap the fruits. I'm getting about a handful a day from no efforts of my own. I sweat my ass off to raise maters and get nothing yet harvest what God provides unlooked for!