He looks at the calandra and see 7 8 9 he's eaten the bed is a water bed so he drinks from that He takes a key from the piano and unlocks the door and he's out?
He uses the piano key to escape He eates the "dates" from thr calendar And drinks the water from the waterbed
Wait, I got it!! He drank from the SPRINGS of the bed He ate the DATES from the calendar And used the piano key to get out