Now that the heating will be going on again soon, I was wondering how you all keep your little ones safe with regards to radiators.

I only really have one big long radiator that is exposed. It's in the dining room and they walk past it/play near it throughout the day. I do have a big 'rad pad' that I used to cover it with but it does take up a lot of room in my cupboard when not in use and I am debating whether or not to get rid of it. To be honest, I probably should keep it, but what do you all do?