Goats Milk Soap

I made soap last evening. It was the simple way, using melt and pour, with a lot of additions. I used lemon, rosemary, and lemon grass essential oils. I added kelp, rosemary, lemon thyme, turmeric, and dairy whey. I tried to layer it. The bottom two layers I mixed together some. The kelp usually speckles green as the soap ages. I like that look. I found 3 little fruit bowls at an antique store. They have a green band running around the top. The flowers are pink and peach roses. I like to use small bowls and small plates for soap dishes. I understand that people use wood that is not level so the soap will drain. The wood rots though. What is up with that???