The mechanical mailbox presented another fresh approach to old technology. Was this a case of using (or reusing) the supplies at hand -- or searching for a novel way to recycle a piece of the past?
This last example is more organic. It reminds me of the cairns I've seen in my travels, most recently in Stanley Park, Vancouver. There is less overt utility here, although it does have some promotional value. The squash cairn was used to draw shoppers into the nearby Hidden Treasures Antiques in Gradyville, Pennsylvania.
There are times when I like to stroll through art galleries, but my visits are few in number these days. So when I can stumble across art in real life (or life imitating art), it's a wonderful treat.