Make a self post on Hexbear and then look through all the custom emojis they have. Click on any you like to add to the post. Then hit preview and it will show them in a format you can then download. This one is “care comrade” or something. I have a ton of those saved to my phone. The emojis thing is like the #1 thing I wish this site had from Hexbear.

Edit: also you should be able to just download the image from the post. No need to screenshot.