plan:

scene 1: person is at desk in a room, struggling to do their homework, parent calls them for dinner, they leave and turn off the lights in the room, revealing the pencil case in front of them. Done

scene 2: pencil case opens its eyes. Done

scene 3: pencil case unzips its mouth. Done

scene 4: pencil case eats the pencil, ruler and eraser. Done

scene 5: pencil case munching on the pencil, ruler and eraser. Done

scene 6: person turns on the light switch. Done

scene 7: pencil case quickly closes it eyes and zips its mouth. Done

scene 8: person walks to desk and is confused by the missing pencil, ruler, and eraser. pencil case looks at person and winks. The end Done