On Saturday, Ledger vomited and threw up THIS mystery item. In the photo below, it is a red "worm-like" piece of fabric that I'm holding on a burp rag.
After much debate, discussion, and detective work, we decided that it was a piece of yarn that was a "fluff" on top of his red stocking hat. Somehow he got it off of the hat and actually SWALLOWED it. Geez.