Well, I really loved crocheting this mighty big blanket. It ended up six feet square and then it just felt too big to keep dragging around in my lap, even though I had a few skeins of yarn left I could have used.
I have plans for those--I'm practicing my pattern-reading skills on them. In the meantime I'm enjoying this massive granny square here and there--the bed, the couch, the chair by the fire.
I did a simple granny square with the exception that every fourth row was made from two rows of single crochet. I felt like it stabilized things and kept them from wiggling quite so much. It made surprisingly interesting patterns out of my randomly-chosen stripes.