A youtuber that I watch, TheFodFairy: https://www.youtube.com/channel/UCy5WCENb9HxXx-3hFfVDi8w, got a couple pieces of jewelry a few months ago and when I saw them I just had to draw them! So I decided to wait until October to do so!
The jewelry was made by https://www.etsy.com/shop/themoonbeams on Etsy. They also have an instagram as well, same username.

Here are photos where I got the refs from:
Here's the bat: https://www.instagram.com/p/Bh11rsi.....by=thefodfairy She named him Nigel

and here's the cat: https://www.instagram.com/p/BjIOLWJ.....by=thefodfairy who she named Guido.