A great Farm Shed or maybe a Horse Stable. How about a charming 'Heritage' Style Residence. You can add a Mezzanine floor for storage upstairs, or choose to build a taller barn and have 2 storeys of living quarters or a 3 door barn to allow a truck in the middle and cars on each side.
Standard 'Old American Barn' with optional barn window
Customised barn with swinging barn doors to gable and optional windows
Standard barn with optional barn window and stable doors
Large American barn
3 door 'Old American Barn' with optional windows
Barn with additional skillion, stable doors and side lights