Be the sketchiest kid on campus and scare all your dorm mates with Blackmail. Each letter is its own sticker so be clever with your level of sketchyness.
This card of sketch comes with 250 assorted letter that also come in different styles all on one convenient card. They also throw in 2 convenient post cards to scare whom ever you are planning on scaring all priced at about $8
You can pick up your own Blackmail kit: HERE