Olivia have you tried Ebay? I totally feel your pain, I would LOVE to sell ready-to-ship, so much more efficient to produce items in volume, and so much less delivery stress than custom....but custom orders are where my (and your) business on Etsy is.
Things that don't move, I mark way down, sometimes give away as a bonus to customers if it's similar to what they ordered, donate at Christmas to organizations collecting for kids....but once in a while I'll throw things on Ebay. I think of Etsy as "custom" and Ebay as "bargain".