Here comes a new chamber music score we've prepared for cello (grade 7+) and flute (hopeless, i.e. me). It's the third movement of the second duet from Beethoven's three duets which I think were originally written for clarinet and bassoon.
PS (July 2015): We've now performed this at a street party and made a tentative recording - not good enough for sharing yet but getting there. Meanwhile, here is a clarinet/cello duo playing the piece exactly twice as fast as we do (as a listener I prefer our speed, it allows me to actually understand what's going on in the music).