What I'm listening to today: "Ambient Noisebox DIY with Pickup & Piezodisc", Endo Monk
4 minutes of spooky atmosphere from a prepared wooden box the musician handmade by sticking pieces of metal wire directly into a guitar pickup. With a few layers of enormous echo, these simple sounds become coherent, meaningful, dramatic.
This link skips the first 42 seconds of the video, in which the musician explains his setup in German. If you speak German, feel free to rewind.