I found most of these at Graphics Fairy's blog, but some were from Google image searches. All of them are free usage, as far as I am aware.
Some would need to be scaled down, others might need to be enlarged, but they're all pretty awesome :-)
There are other versions of most of these labels. I saved the simplest ones with the least amount of color variation, because black ink is cheaper than colored ink, and I can color them myself with colored pencils if I really want to that badly.