This, also summer squashes and peppers. Rosemary, sage, and thyme take a while to become established, like a full year, but once they do ypu will have more than you need. Other herbs like basil, parsley, and cilantro grow quickly and benefit from being planted in cycles. Especially if you eat a lot of them. Growing your own garlic may also save you money, but only if you use a lot.

Absolutely agree herbs are a good starting point. Make some roast potatoes with rosemary salt. The most expensive part is probably the rosemary.

rosemary is super hardy and has outlived every other plant in my front and back yard. we get so much rosemary I give it away to the neighbors and we also make rosemary bread. it's delicious.