You can buy nice tool storage racks at the big box stores for long-handled tools like your garden tools. The handles just hook into the rack and they store neatly against a wall.
Or if you have small children and want to keep them up out of reach, a pair of hooks screwed into the studwall, big enough for the handle of the tool will store them horizontally. Some people just hammer in a couple of long nails at a slight angle . . (my Dad's favorite solution)
