i have been looking all over for a case that holds 2 b flat clarinets. every year i go to a band camp where theres marching, jazz and concert band. i don't wanna play my crapy clarinet in the concert band and my really good one in the marching band. In addition, i play alto sax in the jazz band and my HUGE problem is carrying all those cases. if ne one knos where or wants to sell their double case??? please contact me @ 2band4u@comcast.net PLEASE HELP ME!! thanks

I'd suggest searching online, or maybe making one.

I've felt your pain before. There was a semester in college when the wind ensemble needed me to play bass clar, EEb contra, AND the BBb contrabass on the same program! I was able to carry all 3 cases, but had to make my own stand that would hold 2 contrabasses. Making your own case or stand is a cool feeling...

BH

wwbw.com tends to have a nice selection of things like that; though I've never ordered from them, I've browsed their site extensively.
Another alternative might be to find a way to affix a shoulder strap to one or more cases. Many cases have rings or something already attatched for this, or you could try hooking one under the handle. That would be a good way to free up your hands.
When I was in elementary school and played Bb soprano, I used to carry it in a canvas tote bag, which I could easily fit the case, my folder, and a music stand when I needed in. That helped me not leave stuff on the bus, et cetera, but perhaps you could get a largish bag and put both your cases in there?