Keep string lights up all year long so your backyard is lit up. well I don't know about all year long but this is a pretty cool idea!
Outdoor concrete steps lighting under lights patio plants wood trees
Belgravia House in London by Todhunter Earle. Even though this is a rooftop garden, the design show would be excellent for any long, narrow yard. Great way to break up the space by making different "zones"!