When Kat and I were driving back from Bend recently we both focused on doing a bit of weather magic to help us get through Mt. Hood before the weather got cold enough to turn rain into sleet or snow, and wet roads into ice. I made an observation to Kat that it'd be interesting to attach an association link to the cool/heat dial for your car's air conditioning/heating. When you adjusted the dial, you'd metaphysically adjust the weather as well. By creating an association with the dial, you'd also automate part of the process involved in doing weather magic. It was, as I mentioned, an observation, but its those kind of observations that come to me that lead to some kind of experimentation to see if the observation can be implemented into a practical magical working. I'd note that such a dial could not "control" weather per se, but rather would be used to work with specific weather possibilities, such as strengthening the possibility that the weather would stay at a specific temperature or increasing the possibility of rain (or decreasing). Weather magic, much as with magic in general, is all about working with possibilities and influencing the outcome that a specific possibility will become an actual reality.
The Octavo (affiliate link) by Peter Carroll
Reading the Octavo is kind of a rehash of some of Peter Carroll's other ideas, but at the same time is a clear extension of where he has developed those ideas to a level of sophistication that mathematically proves his points. The Octavo isn't an easy read, and I recommend doing some research into the technical jargon that Carroll uses, but underneath the jargon the reader will find a concise explanation of specific magical concepts and how those magical concepts fit into our particular universe. It's worth a read, especially for the magician who is focused on practical magical work.
Four out of five.