Dear Shawn,
Carol here again. JUst some more ideas of things that grow well in pots. Try chives and garlic chives. Both are easy to grow, and you just cut off what you want to use: they will keep on growing for some time. Just gow a small quantity at a time. Once one lot is growing well, start another lot growing. This way you will have a constant supply.
If you have a covered porch you may be able to make a mini glasshouse with some plastic and grow lettuce most of the year. Only grow the fancy lettuces which don't form a "heart". These lettuces can be used while they are growing, so you can remove a few leaves at a time as you want.
I haven't looked at them, but there are probably quite a few hydroponic kits available too.
Check out Jamie Oliver's books; he is really into his vegetables, and you might get some ideas. I haven't had a look yet but his website might be worth a visit.
Happy gardening
Carol