The simplest things we grow in the garden is garlic. I think it is the most worthwhile as well. You take a single clove and put it in a hole in November and this is what you pull out in July. We use red garlic and the taste is awesome also.
We had a huge crop of raspberries so far also. These are only slightly more work. I made jelly tonight so that the four quarts I picked this morning wouldn't go to waste. Curious: why do classic recipes make such a huge deal about the foam? Am I barbaric for not needing a perfectly clear and clean jelly surface?