Just in case there's a local re-run of the child-in-the-manger story this Christmas, I decided to run electric power out to the horseshed.
According to regulations, the cable must be sheathed in orange conduit 500mm below the surface. That's quite a bit of digging, especially on a day when the thermometer went above 30 degrees, so I called in the Dingo - the K9-3 Dingo, to be exact - and the whole thing was done within an hour.
The 'horseshed' now has power and lights as befits the unofficial 'Embassy of Papua New Guinea' as evidenced by the national coat-of-arms at the top of the shed.