Alex_Muc There are so many ("funny") ways to provide the password directly on the place where it'S needed.
As you mentioned just post-its on the screen, table or keyboard. Under the keyboard, on the coffee machine,... Lockscreen pin at the backcover of a device and so on... Have seen so many of those possibilities as people get really creative on that but it's always a messing around with security which some people don't care about.
But especially regarding the 90days thing, i really would like to get rid of that in our company (this was mentioned on so many security posts in the past years already to not go this way) and instead would like to choose a really good password but as long as they force people to do this in a regular base (no matter which time frame they choose), people will choose easy passwords which can be easily changed like BlaBla1 -> BlaBla2 -> BlaBla3 ... Which also isn't a good way.