We recently bought a house where the basement stairs are open and have a trellis around them that goes from floor to ceiling. The spacing between the trellis is too large, so it's no problem for a small child to fit through. We have a little one at home, so it feels like we should do something about this. We don't plan to "remodel" the trellis. Do you have any tips on how to childproof it in a somewhat stylish way?