Try doing a forum search in cloth diapering. I found some there. I use a spoonful of liquid glycerin soap, a spoonful of baby oil 2 drops of tea tree oil and 2 drops of lavender oil for the most part in a small thermos we use to hold it. I love the smell of some of the baby oils we've been given.
That being said, plain water works really well too. I use a smaller spoon now than when I started since our solution was WAY too strong.
you could easily skip the lavendar and just use tea tree oil. the lavendar and tea tree oils are used to keep the solution fresh. you could also just use the soap and oil and skip everything else if you make it up daily.