Door ideas for rear bunk area on jayco swift 267BHS??

Thanks all. Just wanted to clarify, this is at bed time when we put her to bed, younger sister to bed and we go to bed. I know she is excited, I get that and we've had fun all day, she just wants to keep peeking out keeping her sister and us awake. She is good at staying in her bed, but she walks down her bed and can still stick her head out. :)