Another vote that Lost and Found is great. I hope they find it for you! For future, if I was taking something that special with me, I would put an apple air tag that I could track or a collar with my contact information on it, so if lost, they know how to contact me.
I had an experience a few years ago where my ears went flying off on ROTR (totally my fault forgetting to take them off). I walked off the ride and told the CM exactly where they came off, but nothing could be done as expected. I filed a report and it ended up closed a few days later that they could not be found. About 2 months later, I get an email that the ears were found, so I had them shipped to me since I was going out of town. Got home to my package and the ears I got were 100% not mine. Mine were all red (headband, ears, and bow). These were black headband with a red bow with white polka dots. No idea how these were picked as mine. LOL