On the topic of Linux logos, about 20 years ago there was a popular Ethernet <-> USB storage bridge called an NSLU2 aka the “Slug”. It was of a similar pedigree to the classic WRT54g but instead of routing, this device turned cheap USB disks into a NAS device:

https://en.m.wikipedia.org/wiki/NSLU2

There was quite an active group of hackers bringing Linux to the platform. This was their utterly heartwarming and adorable logo:

https://www.socallinuxexpo.org/scale8x/sites/socallinuxexpo....