Ugly Mirror Rescue (pic)
I didn't take a "before" picture of this, but it's just one of those big rectangular mirrors with no frame on it that are so common in bathrooms. I didn't want to try to take it down by myself, or to mess with power tools (still packed away from my move), so I glued craft marbles around the edge. It was a very inexpensive fix, and another fun use of the hot glue gun.
Here's a pic: