Our willing garden helpers are usually congregated quite close to where we are and it doesn't take much to get them to come in and help out but they are almost too helpful and can clear a garden very fast. Sometimes we sit and drink coffee and watch them do all the work and return to a well tilled garden that we can just plant and walk away.
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.