One of the oldest cryptocurrency projects with initial development starting in september 2013 is celebrating its revival. Marinecoin aims to provide a fast and lightweight blockchain alternative focussing on much higher transaction speed then its competitors. Right now they are holding an ICO with zero cost entry fee. With the project relaunch itself still being in the early beginnings there is a lot of potential to grow and therefore a great opportunity with little effort and big potential reward. See https://marineco.in/ico for more information.