We went to a carriage driving show and forgot the driving bridle ...having had it out to clean the night before!! Fortunately, someone loaned us their spare - it did not match, and we explained to the Judge, and he was very nice about our forgetful moment!!
I do have to write myself a list of what I am taking and check its loaded. Memory not as it was.
Although not as bad as a lady who told me she got to a horse show, opened the ramp, and realised her horse was still standing in his stable at home.
My neighbour asked me to mind her cat as they were going away. I got home from work, and noticed her back door was wide open. Very strange - car had gone, so they had definitely left. When they returned, they were horrified. Each had thought the other had gone and shut and locked the house door before leaving!!!