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.
Excellent article on microgreens. Sprinkle cinnamon on soil to prevent soil fungus. Use four containers and plant new seeds every 5 days for a continuous cycle of microgreens. List of veggie seeds to use. Use new soil every 2 to 3 rounds.
Cahaba Clubs sells the freshest hydroponic micro-greens, micro-herbs, micro-vegetables, exotic tiny greens, tiny lettuces and a variety of pea shoots. All of our products are grown using practical hydroponics.