I buy slabs of melt and pour soap and make all of our bar soap with that. The kids love making soap this way.
I can't stand the smell of the synthetic fragrances, either. I use essential oils. I usually also add 1 teaspoon of almond oil per bar (don't add any more than that, although you can change the type of oil). I have bought clear, opaque, and she butter slabs and had great success with all. I used to add solids to the soap like poppy seeds, orange zest, etc., but dh complains that solid additions hurt his skin. So now, I only add stuff like that to bars that will be in gifts.
Mom to Eoin (11/02), Eilis (09/04), Eamon (07/07), and Ellery (04/10)