Forever and a day.

Jessica walked cautiously through the door, her curiosity overriding her instincts not to go in. She closed the door behind her and turned around. She was overwhelmed when she saw that the room was one big whiteboard. There was a box in the middle of the room with a huge selection of board pens in every single colour. She picked one up and began to doodle aimlessly on the walls. Anything she didn't like just disappeared.
"I could stay here forever," Jessica whispered, drawing happily. "Forever and a day."