4
Bunch of rocks
(ani.social)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
I guess this is not the point of the comic but would this "thinking and deducting math" be a solution to not go insane from brain atrophy during solitary confinement?
Theoretically, with enough random debris you could do lambda calculus, so by extension you could create fully functional programs to entertain yourself.