Recently I've been thinking about picking up either a ukulele or mandolin, both having four strings and being a whole lot smaller than a bass. I would most likely tune the instrument EADG, and would mainly use it to tote around with me on trips and what not, to keep the creative juices flowing. I guess kind of like a sketch book except for a bass player. I was just wondering if anyone has done anything like this, with these or any other instruments (bazookies?), and what their experience was. I already have an acoustic guitar, and am trying to find something quite a bit more portable, definitely acoustic, and not too much different than a bass (with consideration to the obvious differences steming from a smaller size). I dont really want to focus on learning a new instrument, or dealing with any more strings than I already have. Thanks in advance.