It does help to grow even a few things on a balcony, sunny window. Spinach, herbs are quite easy to grow indoors. Connect, if you can, with people who have yards and see if you can work out a sharing program for growing vegetables you will actually eat. Potatoes CAN be grown in pots, and all you need are those sprouts appearing on the potato, planted, and they'll produce some spuds. Seeds even from discount stores will grow.