I use shampoo for everything. When I shower I use it for my hair and the rest of me, why take soap. I use a bit to lather up for shaving....not ideal, but it works well enough. A drop works well for washing dishes or clothes too.
I find that I don't need deodorant as I shower well and wool tops stop me from stinking.
-I use the castile soap for everything too (shampoo, dishes, clothes etc). I also like it because it's pretty concentrated, a little goes a long way.