Wow. I had Supernatural ever since it came out, and only now did I realize that the Conversion Ritual is really, really useful. My witch founder would do it even when he was on the verge of motive failure, and he ended up turning a conjured apple/seed/gem/dust/some piece of cheap crud in his inventory into Tiberium.
Combined with a housemate who built up LTHP really quickly (10,000 points a day at times) and switched his LTW to Swimming in Cash, I ended up with ~140,000 in funds and a Motive Mobile. It really took me that long to think of this.
I also ended up buying from the Elixir Shop and re-consigning everything I didn't need, which was a rather cool way to make money.