In the previous online meeting someone mentioned no input mixing as a way to create sound. The matrix mixer is ideal, but not necessary, for this kind of auditory shenanigans, hence the title of the challenge. So for those brave of heart surprise us with your wickedest creations, but thread carefully when adjusting those levels on your (matrix)mixers.
Looking forward to your feedback (see what I did there? ) and hear what comes out of this.