We only have a limited space on our kitchen window sill at the moment, there we keep flat leaved parsley, basil and thyme during the warmer months. They don't endure the winter months, and this period we really miss them... but it is almost time to plant the herbs anew... woohoo!! It is great, they tastes so much better, you wouldn't realize what you are missing until you try the fresh herbs, but you will immediately appreciate the huge difference.
If you have a space even for a little planter, I definitely recommend it, it is very easy to care for them, doesn't take too long before you can "harvest", and the convenience of being able to snip what you need every time, instead of having to buy a big bunch then not knowing what to do with all of them before thy go bad.
When we have more space in our new flat, I would love to expand to some oregano, tiny spring onion herbs, and coriander.