2. Voyage Air Guitar
A revolutionary idea in the music industry, the founders of Voyage Air Guitar are father and son. Realizing how hard it is to travel with a guitar and the fact that musicians have to travel all the time, the father and duo son came up with an idea to be able to fold the guitar and store the strings as well. The main issue was whether the guitar would remain tuned after its reassembly, which the founders proved to be possible. While Kevin O’Leary offered $500,000 for a stake of 51% of the business, Jeff Cohen, the founder, declined which led to a souring of the relationship. However, this cost effective idea found its place on our list of most successful Shark Tank rejects, because company’s success continued which allowed Jeff to return to the show, this time making a deal O’Leary.