(There was also the World’s Largest Bass Clarinet Choir, but that was a one-shot gig.)
A slightly odd thing: Concertino, a clarinet and saxophone ensemble. That’s not so strange in itself — not that I know of any other examples, but it’s sort of halfway between a clarinet choir and a wind ensemble, right? — but they seem to have about 27 Bb clarinets, one doubling on Eb; two alto saxes; two tenor saxes; and two baritone saxes doubling on bass sax. Which seems (a) awfully skewed toward the soprano and (b) oddly lacking in alto clarinets, basset horns, bass clarinets, contra-alto clarinets, and contrabass clarinets. And soprano saxes, for that matter. I dunno, just strikes me as a strange idea of instrumentation. (Not that Edmund Welles and Rocco Parisi’s aren’t awfully skewed away from the soprano, but that’s the whole point.) They don’t seem to have sound samples online, so I can only imagine it.
Finally this picture of field tests of the Army’s newest shoulder-launched antipersonnel clarinet, from the web site of the 77th Army Band Clarient [sic] Quartet. You can get clarinets in red and green and purple these days; why not camo?