I was let go in Feb. 2019. About one week before that day, my butterfly kn--e disappeared from my desk central drawer. I used it to peel apple during lunch break. It’s my daily routine. I was surprised but didn’t pay too much attention. After layoff, I figured it out. HR or Security did preventative check before the big day.
So you can do a test. Leave a kn--e in your open drawer, or just in a can on your desk. If it’s gone suddenly, then it’s your turn.