I'm not only a witch, but a musician (Baroque oboe, oboe d'amore, oboe da caccia) and composer too. A composition is a kind of a separate world, a sacred space where I step in when I am working on it. It is another language of being me.
I experience that when doing magic as well. If you strip all the layers and masks from who I am, I am still a witch and musician. As a experiment I tried to abandon both in my life, and that was not possible. Me was not me anymore. I cannot even separate the two, they work in tandem. I use the same parts of me to make music, as I use in making/doing/living magic. In my mind it are not separate processes.
Overall, when not composing or doing/being witch, I am creative as well. Drawing, crocheting, knitting, quilting, writing, playing with words, playing with thoughts. And now my parents have a pottery workshop my hands are itching to work with that also. They are reusing the powdered remains for new work. and it is needing water to be used as new clay again. In my mind I can easily see that it would be interesting to make a few art works with clay mixed with water from different sources like a holy spring, a local stream, water with therein some dew gathered in the spring etc.
Towards witchcraft: here on the forum I only share the tested methods in witchcraft. But my mind is creative in making much more methods and rituals. I designed much more rituals than I could do myself in a lifetime. (however I work with just a few of them) I can easily come out bed with a complete new ritual in my mind, like I can for making compositions. I even have often dreams about doing both from a very young age and I must have been a very complex child to deal with.
For those who work with spirits, have you ever experienced that it influenced the creative things you make?