I always have some in my garden. When it blooms, it has cute little button flowers:
Being so aromatic, it is good insect repellant. Dry some leaves and scatter them around to help keep flies and ants away or in your cupboards to keep moths away. Plant some in with your veggies to help keep insects away, including Japanese beetles.
But be careful. It is invasive, spreads from the roots. I plant it in a pot and then just bury the pot, but still it tends to escape through the drain holes and I have to keep pulling it. And it can be toxic to animals that eat it.