Agree, but also do plant something that you’ll use just a small amount from time to time, like herbs, spices, scallion, chive, and so on. Thing that you’ll want it fresh but you can never use it all before it compost. Don’t even need a garden, just plant it in pot.
I have screwpine leaf, lemon grass, coriander, and scallion in my garden, and i can harvest the onion when i need it.