Half a sweater, anyway.
I need to knit several more rows at the hem, because it's rolling up too much, and then I'll have to figure out what kind of sleeves to do--I kind of like the idea of short sleeves, but they might be impractical--and then I will have a nice warm recycled sweater! Yay!
And then I can knit something else! Yay!
And I will have more room for yarn, but less room in my closet. I'm not sure this is a good tradeoff.