Wrapping notes written on lined paper around bricks and just chucking them over the half-wall and what happens next is up to god
A piece of parchment stabbed onto a cooling corpse that reads “I hope this email finds you well”
voice recordings, each one on a separate Sony Walkman left scattered around the office in the order a hypothetical explorer might find them
"per our last cassette, please consult with the legal department on how Project Apotheosis relates to our consent decree"