Me! Me! I can ruin lasagna!
Now, I'll compete with Sorcha for best apple pie.. except for the time I forgot the sugar.
I've forgotten to add the chicken to chicken soup, the salt (or oil) to homemade bread, there are recipes in my files with reminders in 2-inch letters in red ink: DON'T FORGET THE ******!!!!!

But I also have an old camera tale with 2 endings. I was hitch-hiking thru England in 1978 and was in the Lake District. Had my beloved Olympus OM-1. Left it in the car that had dropped me off in the middle of 2 villages about 10 miles apart. Got to the youth hostel, found I no longer had beloved camera. An hour later, the young couple from Kendall brought it to the hostel- they had gotten home, found the camera in the back seat, remembered the name of the hostel, and drove all the way back to deliver the camera!
Took many lovely pix with that thing. Came home in May; 2 days later went to the theater in Boston. Left the camera on the seat. Never got it back again.(The second happy ending is that my dad then gave me his beloved OM-1 and I still have it!)