I love those soda bottle plant containers! It's nice that they are see-through, making it easy to keep an eye on root development!
Regarding the outdoor bathtub for bathing the dogs; we have 2 wacky Golden Retrievers that my husband takes into the walk in shower in our bathroom to give them a bath. If they were to be bathed outside it would be near impossible to keep them from rolling in the dirt afterwards. They do love water and we have a swimming pool but we try to keep them out of it because of the chlorine. The 3 year old has really long, thick fur and a tendency to get hot spots and chlorine isn't good for him. The puppy who is almost 6 months old hasn't ventured into the pool yet but he's real curious about it. Luckily he hasn't had issues with hot spots so far and we sure hope he doesn't have a tendency for them like his brother does. I don't even want to think of two dogs suffering and having to wear the cones of shame.
