I have a open two story house where I can see the downstairs from my upstairs hallway. There is a 1/2 wall in the hallway and my 2 1/2 year old has become very active and loves to climb. I'm afraid to turn my back on her upstairs as the 1/2 wall isn't very high and it is a massive drop. We currently don't allow her upstairs by herself but would like for her to be able to play in her room without me worrying about this wall. We've considered Plexiglas however,we would like to come up with a solution that isn't permanent for when she is older. Any ideas??