T.D.
Can you put the beds together so one's against the wall and the one with the rails is on the outside? Or, what we did with our girls is we just put the matresses on the floor until they got a bit bigger. Or, you could do as you asked and just put some blankets or what not on the floor to cushion a fall somewhat. Our kids have only fallen out of bed maybe twice. I guess it's kind of a chance ya have to take. The easiest for us though was the matresses straight on the floor. They make rails for bigger beds. They probably have them for toddler beds I would think.