There are plenty of other plants that can be grown indoors if you have a nice sunny window. Often these are sold with grow lights for countertop growing. Among these are basil, oregano, thyme, mint, and of course garlic (onion family and all).
Some plants really do just taste better grown at home. Back when I had a small garden we planted carrots. Of course I didn't think too far ahead and should have tilled down further, the carrots only got as long as they could push their roots because under the nice soil there was super hard clay. One of the carrots actually turned to the side to keep growing. They were super flavorful though. That kind of taste you just can't get at a grocery store. Possibly at a farmer's market but even then they often go for varieties that are more large harvest than flavor.
We still keep thinking we'll get some more rosemary since it just keeps growing once you get it established. It's one of those strange plants that no one wants more of because all you have to do is wait and you'll have plenty, but if you have to buy it at the store is ridiculously overpriced. You don't really even have to do much to it and you have enough for the whole neighborhood. In that way green onion is much like rosemary. You just cut the tops off when you need them and the plants just keep growing. For those that might remember we had green onion in our front yard for nearly a decade that just kept going even in the freezing winter days (this is Texas that's all you get).
