Update: Lots of great guesses. Maybe this rear quarter shot will help you all pin it down further.
Here’s a nicely wrapped…? Some folks just throw a tarp over their baby, and maybe a couple boards or bricks to keep it from flying away. But this one: the rope goes around and around; a two person job, I’d say. So what’s under it? I’ll leave that in your capable hands. If we don’t get any right guesses, I’ll add the more helpful rear shot later, but I doubt that’ll be necessary in this crowd.