I’m a fan of the demotivational posters.
So am I.
At my last job before self-employment....some 22 years ago I bought 6 of them and along with some assistance from the corporate sales manager, replaced all of the run-of-the-mill motivational posters with the demotivators. Sadly, not a single executive noticed the change. They were on the wall for about 6 months before I moved on.