Since I'm not allowed to have something ephemeral, then it would have to be the notes my Gran made when she was approached by someone writing a book in which her father had a 'bit part'.
When asked for some 'interesting snippets' about her father, she had two problems, where to start and where to stop! He was a bit of a rogue - no, he was a lot of a rogue actually - and her stories of him were legion. She scribbled them down in a notebook but because her writing even at it's 'best' was appalling, she got me to type these notes up. Of course, that was in the day before puters and, no, I wasn't much interested so no, I didn't keep any copies. Oh b*****!
I take some miniscule comfort from the fact that had her writing not been so illegible I wouldn't have known these notes even existed and at least I can remember some tiny snippets of what she said.
Of course in more recent times I managed to get a copy of this book - references to my grt-grandfather are - well 'scant' is the word which springs to mind! B*****!
Undeterred, I managed to seek out the author, he kindly wrote saying he seldom destroyed research notes and, promising to send me a copy of what Gran had provided .... promptly up and died!!!
Oh b***** again!