Well, I've been creating my own original percussion instruments that I call Gadgets. They are each of unique design but are primarily percussion oriented, with a few curve balls thrown in the mix. They follow the long tradition of musical Folk Art percussion instruments started more than 100 years ago in various kitchen bands of using what you have to make music and later became popular in the Jug Band scene. In some of these designs, I began to add instruments of my own invention. I've toyed with the notion of creating a way to enhance the sound of a harmonica. The idea was inspired by something Hohner made about 100 years ago, called a Trumpet Call. Hohner's design had no actual enhancement of their harmonica. In fact, it actively limited a harmonica's sound but it made you look fancy while playing. So, it was primarily decorative in nature. I crafted a couple of my own designs that would actually improve the sound's focus. I call my two prototypes a Vacusonica and a Vacuvasonica. Mine not only make you looking weirdly strange but work as intended to focus sound. However, they rely upon the use of trumpet-like belled shapes to do so. So, the notion is merely an innovation not 100% invention.