I used them already, knitting a sort of shoulderette thing from the blue 100% wool I bought at Le Comptoir in October. It's inspired from the Noro Hat from Saartje de Bruijn (Ravelry link). I knitted two of those last year, one in Kureyon #165 for me and one in Iro for Mom, and I love the effect of the horizontal faux-rib so much, I used it for this shruglet-noname blue experiment. It stope right after covering my shoulders so far, and I think I'll go back to the shop for a second skein and lengthen it some.
I might even manage to take a picture of it, too! I'm wearing it right now, it's nice and warm.