Yes, you can create a solid Goat's Milk Lotion Bar. I found the following recipe but unfortunately, I don't remember from which website:
SUPER RICH GOATS MILK LOTION RECIPE YOU CAN MAKE AT HOME
2 Tbsp Goats Milk
2 Tbsp Water
2 Tbsp Oil (any kind)
2 oz. Beeswax
1/4 tspn Borax - **see comment...