We had autorun.inf in the past installing automatically from any random USB drive[1]. The fun days where you always feared contracting malware if you so happened to plug a random USB drive in :)

[1] https://en.wikipedia.org/wiki/Autorun.inf

And some USB drives pretended to also be a CD-ROM to circumvent the limitation of autorun.inf not executing on removable media.

https://en.wikipedia.org/wiki/U3_(software)