I recently ran through an MFA enforcement campaign and had to build that app into my instructions. “Make sure it’s the Microsoft authenticator, not the first result in the paid ad slot” because so many people were installing that app. I do deal with pretty low levels of tech savvyness, but still.
Google Elephant graveyard myth
Cloudhiker https://cloudhiker.net/
No idea if it’s any good though
https://thickit.com/blog/nutrition-product/thickened-water/