This company makes boomboxes from old suitcases and sell them above $500 each. their website is looking professional and they have some intro video clips also.
My idea is to make a boombox from a car stereo under 100 euro. I will create series of tutorial videos about how to make a boombox from your old car stereo. On the internet I have found lots of videos about making a boombox but the videos are not clear enough to give courage to the people to make. The most important part of this idea is the electric wiring and cutting the speakers holes.