Clip your toenails.
Bringing your pet bird to work.
Shave your legs in the Ladies.
Blow bubbles outside to see if they would freeze.
Hide to scare people.
Sleep but then say you were praying.
Take bathroom selfies.
Change clothes in your cubicle.
Warm your feet under the bathroom air dryer.
I once put a black paper May Basket on my doorknob with catsup coming out. And I kept my job.