I've always been a big fan of Electro Harmonix effects pedals. In the mid '80s, their 16 Second delay box was able to capture sounds on the fly and loop them. I used them in live performance and it always felt like magic. This is a bit of a novelty for sure, but their gear still holds magic for me.
One of the news feeds I enjoy reading is all about electronic music. It recently had this video, a recreation of Pink Floyd's classic song, "Welcome to the Machine," performed with an electric shaver, a few guitars and a whole lot of pedals.