I went to a very small local art gallery back when I was in the States, which was early May of this year. It was mostly paintings of all kinds by local artists, including some abstract, but most of them portrayed the area and the shoreline/coast. There were some handmade mugs and other trinkets made by local artists for sale as well.
In the realm of modern art, a lot of it can be very interesting and slightly odd (in a good way). The photo you posted here with the front bucket loader and branches reminds me of something I've heard people call "up-cycling." A few of my friends do this with some of their own stuff, but not in an art gallery worthy way. Since we live in a world that is full of materialistic goods in outrageous quantities, I find that if people can "up-cycle", it is putting someone else's waste to better use. It is like recycling with creativity, which I think can be very neat and unique. We as individuals all have our own taste and flavor for what appeals to our senses, but if people are able to truly be creative in whatever way they can, I think that is a wonderful outlet and we should all be happy they are able to express themselves in a constructive way. If nothing else, their work can be admired for trying something new.
Oh yeah I can admit that this is one of the good parts of it.