There's a crazy-pants challenge in the Stash Down group in Ravelry to use up 12,000 yards from February 15, through March 31st. While I didn't sign up for the entire challenge, I did sign up to try to finish up 4,000 yards during that time.
My major double-stranding project is finished, and it has used up 2,031 yards of my stash yarn. I triple stranded lace and held it with worsted; I double stranded fingering and held it with dk; I doubled up the worsted, and this is what I got:
It's using my Reverse Mitered Block pattern in all the rainbow colors I could find in my stash. It's going to Wool-Aid, a charity that collects handmade wool items to send to children overseas. I love it.