ZDoom

Theres gotta be a better way to get find some specific sprites then digging trough 2000+ pages.
A way to list all files of a specific type would be a godsend.

Edit: Nevermind, figured it out. Bing Image search of 'site:forum.zdoom.org' with filter set to 'Animated GIF'.
Only searches the whole forum but at least it lists actual animations where Google and DuckDuckGo show mostly static images.

You'd have to use the forum advanced search and hope they used keywords in the post. (Or quotes of the post, even.)

https://duckduckgo.com/?q=site%3Ahttps%3A%2F%2Fforum.zdoom.org+spriting+carnival&t=hx&va=g&iar=images&iaf=type%3Agif&iax=images&ia=images

Edit: Apparently, I cannot see, you have already posted this solution.