A few years ago I went through a Colourmart stage where I bought a lot of coned yarns of various types. I made some lovely projects, but still ended up with a couple of bins of cones that have been sitting around waiting for inspiration.
With the intent of creating space where is now none, I grabbed some of the half full cones with thinner yarns and cast on with three of them held together for a 1×1 ribbing. When one cone runs out I will add in another and just let the colors change.
These cones yarns still have the spinning oil on them, so when it is finished and washed in hot water the yarns will soften and expand. And my available storage space will expand as well.