Sure, you could use the built-in speaker on your tablet or cellphone to crank your tunes on the bus or at the office, but Scosche's BoomCan may be the ticket for those looking to pump out a bit more volume. It's not wireless like some other options, but twenty-five smackers gets you a 2 x 2.5-inch aluminum Can loaded with a 40mm driver, an audio / USB charging cable and a pouch for scratch-free traveling. You'l