So cool. Check out the Ekdahl Moisturizer. It’s a spring reverb with exposed springs, which means that while it can be used as a traditional spring reverb by passing audio signals through the springs, you can also stroke, pluck, and fiddle with the exposed springs to create liquidy, bouncy audio goodness. If you are looking for a unique analog sound, for only $300 this unique effect/instrument would be a fine addition to your sonic arsenal. More info about the unit can be found here.