One of the first threads I got totally riveted by was the lost hair booble plate that went down behind the toilet. Cue everyone wondering what a booble was (it was a hair bobble plate) then others wondering why you would put your hair bobbles onto a plate (and why you would put the plate on top of the toilet cistern) and then the OP was using a fish slice trying to push the booble plate out all in real time and coming back and updating us in an increasing state of distress. Her DH came home and gently held her in his arms and said he would get the booble plate out and all of MN swooned at the romantic hero.
It finally came out- I think some dismantling of walls was involved and then a triumphant photo of the retrieved booble plate.
I can't find the thread now.