Alien head erasers
From KGB Wiki
In the spring of '99, a delegation of KGBers toured campus and realized in fact that aliens had invisibly invaded campus. They marked their coming with tiny Alien Head Erasers. The erasers were in every nook and cranny of the University Center, Wean Hall, and Doherty Hall. This lead out KGBers to conclude that aliens:
- Use pencils - Like Capture the Flag with Stuff - Haven't figured out to dine off campus after 11pm.