Situation: I'm going on a touring thing where I wouldn't be able to take much more than a small suitcase. I wouldn't be able to fit my practice amp. Most of my (guitarplaying) friends are bringing miniamps, and I want to play along with them. a) Do bass miniamps exist? If so, TELL ME! b) If not, what's the smallest practice amp you know of? c) Any idea if a guitar miniamp would work/last?