660 yards of washable wool

I have 3 skeins of Cascade 220 superwash and i have no idea why i bought them! Is this enough to make a vest for me? All the patterns for wearable items seem to need so much more yardage than what i have. Is there a site that organizes free patterns by yardage required? Any other ideas of what to do with this, other than (groan) more scarves?
Thanks in advance for your help!

what size do you need to make?

a medium ladies size would be fine

The Tweedy Vest from Knitscene calls for just about that much yarn.