Want to look at some old viruses for nostalgia sake? There is a Malware Museum with neutered old MSDOS viruses that run in DOSBox within your browser, or you can download them as keepsakes if you have DOSBox installed on your system. Some of them are pretty trippy like LSD.COM, or weird like this virus featuring some old guy walking across the DOS screen. There’s even an interactive one that gives you the option to play one armed bandit to save your data, heh.
I remember a few of the ones on that page, but by the time I saw any of them they were gutted and turned into joke viruses. These truly are some fine examples of early trolling in the 80’s and 90’s.