DuckDuckGo displays a special logo when you search for FreeBSD or OpenBSD

yndoendo

They also have one for Linux and select distros.

bitwize

This reminds me of Google's don't-be-evil era, in which they would add easter eggs like this: "did you mean Emacs" if you searched for vi/vim and "did you mean Vim" if you searched for Emacs, "do a barrel roll", etc. It's a bit weird to call the internet of the late 2000s/early 2010s the "old internet", as I was already wistful for the 90s internet then, but yeah. Something charmingly old-internet about this.

doubled112

They have a ton of logos. I think they do sports teams too.

sublinear

https://logos.fandom.com/wiki/DuckDuckGo/Easter_Eggs

opem

find more at https://makdulac.com/daxduckdex.html

The_SamminAter

Another: https://duckduckgo.com/?q=megamind&ia=web