a rocking chair that moves on it's own what farm isn't complete without a porch with a rocking chair on it.
also wheelbarrels filled with dirt (or fertilizer

) and body parts with a shovel leaning against it.
if you have a storage shed you could make a fake front for it that looks like a barn or heck build one anyway to put on the far end of your yard.
shed full of old tools that are hanging all over (the ones that look really dangerous)