I made a quick solution to one of our baby proofing problems: the fireplace. We have a lovely gas fireplace in our house that we don't ever use. Right now my daughter is walking all over the place and poking her little fingers in everything. Once in awhile she bangs on the glass door of the fireplace, and the other day she figured out how to slide the door open - yikes! What to do? I put a child lock on the handles to keep the doors closed, but how do I protect the glass doors?
Aha! I realized that a flattened cardboard box that we had laying around our house was the perfect size to go over the door. To make it pretty, I bought some cute upholstery fabric and hot glued it around the box. To add a little cushioning for the glass, I stuck a layer of quilting padding underneath. To stick it to the glass, I just used a bunch of painter's tape to make sure I could remove it cleanly when our childproofing days are over.
Not bad eh?