K.D.
My almost 2yo was actually put in ICU when we were traveling and the hospital did not have another bed for him. It did not scare him to see the others. It would mean a lot to your mother, but it might be a hassle for you as there is a lot to play with. I'd call ahead first to see if your mom wants the visit with so much activity and to see if he's even allowed. Also take toys and a drink and snack with you to keep him occupied. A small backpack he can carry should hold enough for a short visit. I hope your mom gets better soon!