Has anybody used anything like this before? Although D.I.Y soap making was not something I had ever really considered , lately I have realised that there are quite a few scents that I would like to see that are not yet available; on the surface this would seem like the ideal solution. However, as far as soap making goes I am completely clueless, I have no idea if this set is any good, or whether or not it would even be worth looking into. Any opinions on this?