The whole window will have a one foot wide window sill. I will have to show you the place to get a good idea of things. Basil planted in teacups for the kitchen, cheap and pretty teacups planted with fresh herbs on the window sill.
These hanging pots from Boskke have literally turned gardening upside down. I like the idea of growing herbs in the kitchen where they can be easily accessed for cooking! (Studying for technology project.