I love this idea for putting posts up, for lamps, that can also be fence or divider connectors. I like hiding a sturdier metal post inside a fabricated wood post, then attaching the remainder of the fencing to it. Great for high wind areas.
Unique DIY String Light Poles with Concrete Base. These DIY string light poles are extra sturdy and they look unlike any string light poles we’ve seen, with tree trunks taking the place of wooden or metal poles in the concrete bases.
I'd use flowering shrubs rather than evergreens, a few different kinds, and arrange them in a reverse symmetry.] A long, thin garden with plenty of room for puppy to play and lots of privacy from the neighbours.