One herb I used just for fun was lemon thyme. Have only found it once since - at a greenhouse but they wanted almost $4 for a tiny start so I didn’t get it. I need to find some seed.
It’s great, you squish a leaf and smell your hand - it smells like lemon. And like other thymes - I’m sure it would grow between stepping stones and smell good as you walk over it.
I’ve seen decent sized plants at a nursery around these parts and I think they were only $5.95 or so.
When you think of it though, since it’s a perennial, you’ll always have it and you can grow them organically. When you consider what the herbs cost in the stores, even that cost for a plant isn’t a bad deal in the long run.
Herbs are really pretty easy to grow and sure make whatever food you have taste better.