all of these are carved into the wood with a compass needle most likely. Pen and pencil don't last long in this economy (and teenagers are resourceful as hell)
pink floyd's dark side of the moon album cover
13
a (n actual) padlock with "MCR" written in it with black marker hanging from a side of the table.
"DAYS IN HELL" + a pretty considerable amount of tally marks. this one was half broken.