Here's a brick wall solution that you may not have tried. Tear down your wallpaper and look for genealogical clues. This is what a Lafayette, Indiana resident did recently. But she wasn't hunting for ancestors - she was renovating her dining room. She found a marriage inscription for a possible relative of mine.
After removing the third layer of wallpaper, she uncovered this inscription on the underlying plaster:
H E and D B Goaz
July 1th 1905
My Goaz family (step-children of Asa Clark Brown) lived in Lafayette, and although I have not yet made a connection of H E or D B Goaz to the family, I'm anxious to pursue this.
Although not a genealogist, the resident clearly knew this was an important discovery, and should be preserved before she painted over it. She first looked in the local telephone book, and not finding anyone with the Goaz surname, she did a search online. She located a Surname List page for Tippecanoe County, Indiana where apparently I registered the Goaz surname some time ago.
The wall has now been repainted, but the information has been preserved. Adding a source in Legacy for this will be interesting....
How about you? What unique discoveries have you uncovered?