I rarely see a dog yards without getting ideas for stuff I could do better at home. Monica and Arild have this nifty camouflage net (above) over their dog lot, which gives the dogs shade during summer. As it is perforated, it survives rain pretty well. Of no small significance, I feel, is that groovy Asiatic look they get.
Below is a drying rack for used, but not worn out booties. Reportedly, this contraption "does not work really well", but if it was kept out doors it probably would.