Comfrey drying on garden bed to put in with potatoes. Did you know that potatoes will crop more heavily if you add dried comfrey when you plant tomatoes. Make sure you let it dry or the comfrey will grow where you don't want it !
Ever thought about generating your own electricity ? Growing your own food, living sustainably ? Maybe keep a chicken or two and some animals ? Living off the grid may not be for everyone but for enthusiasts its the bees knees and you don't need to go totally off grid to become a part time urban farmer.