Looking forward to using this next time I'm told I have to print, sign, and scan a document. I already have software setup to slightly rotate the page and add some grain, but this will add extra verisimilitude.
I made this a while back for fun -- changing the seed will add different artefacts to the page, rotate it, hole punches, and of course coffee stains:
https://sublim.nl/scp/?seed=1234567
Verisimilitude is the right word, most people I know would know it if they were going to be reading anything about LaTeX. It might be a cultural or regional difference, I am in Australia.