First time I grew potatoes, I had run out of dug beds, and time to dig more, so I tried no-dig potatoes. (In well rotted manure on top of cardboard, 'earthed up' with straw etc. ) The manure was contaminated with pyralid, not enough to stop them growing completely though, and by the end of the season it had completely broken down and the potatoes were looking good, then the blight hit, and I don't know whether I over planted or not, but I had plenty of spuds, of yummy not for sale in the supermarket varieties too.
Next time (last year) I struggled to get them all in (normal method), and apart from the initial mounding up, didn't earth them up at all. I must have mounded up just enough though, as I had very few spoilt by green. Too many to harvest before the rain set in and turned the plot to a bog. I dug up the rest when the weather improved this spring. Hey presto! Ready chitted spuds to replant in no-dig beds at home! I was extra lucky, as they were a variety I really wanted, but the shops and market had run out of! (Arran Pilot).
Then there's French tarragon. After I think three failed attempts to keep it going over winter in a pot indoors, I gave up and put it outside to take it's chances in the ground. (Actually I had bought two pots as one was going cheap at a garden or club sale.) After the winter being both horribly wet and very cold I didn't expect to find anything left of them when I cleared the winter weeds away, but they were still there! And still going strong, one better than the other though.
Other stuff I haven't had any particular miracles with, but I have to mention my carrots. They were riddled by the fly, but what was edible was so delicious, that even the boys noticed!! Whatever you do manage to grow, will still be far superior to shop bought.