We’ve talked before about using a pool noodle as a babyproofing aid, but here’s a specific application many folks ask about: the stone or brick hearth. From Jen:
We have a foot-tall hearth on our fireplace, with a stone slab on top. Perfect for head-bashing for little ones. They sell foam things that use strong double-sided tape to stick onto the stone (or brick) of your fireplace, but I’m afraid of how difficult that will be to clean up when we don’t need it anymore. So we bought a couple of pool noodles and cut a slit halfway through the long way (cutting through from the outside to the hole that is already in the middle). Then we pushed it on the edge of the stone slab. The tension of the foam trying to revert to its “natural” shape holds it in place – no tape needed. Our baby is just learning to move around, so we also put a body pillow along the edge of the fireplace so he doesn’t roll into the stone at the bottom either. I imagine a toddler could probably get the pool noodle off if they tried – but it’s not too difficult to put it back in place.