A few months ago I was going through my secondary email and noticed I was getting a $0.01 monthly bill from AWS.
Having not used AWS for years, I logged in to check it out, navigated through the Kafkaesque maze of their services until I found what I was looking for:
A lone S3 storage bucket, with one file, "Squirrel.jpg". A 200kB picture of a squirrel that I uploaded 8 years ago and can't remember why.