Organic Gardens Network put together a primo list of four dozen things YOU! can grow in a container. Given that you've got enough light, you can probably grow much more than you've thought of!
My favorite surprises: tree fruit! Hops! Herbal tea! Melons! And even a loofah.
That's right, you could grow your own scrubbing sponge. Click through and check out the other 61 things you can grow in a container.