I recently inventoried my fiber stash and got it all on Ravelry. It is sobering, my friends, sobering indeed. In addition to coming to grips with the massive quantities of wool in my stash I also notice a zillion (slight exaggeration) little bits of fiber samples from classes, events, etc. I spun a few up this past week and plied them. When I ran out of one I grabbed a bobbin of some other driblet of singles in my bag of tiny bobbins with minute amounts of singles on them. I ended up with one these three skeins.
Nothing was labeled so I'm guessing here that the blue/green skein (the big one) is wool and wool/silk. The middle skein appears to have some bamboo. The skein on the left is just wool...maybe?