On notice period !

Smile more. Make sure you manager sees you smiling. Nothing hurts them more.

Add alcohol in water purifier/bake brownies for everyone in the time, but make sure just one of the brownies is laced. Observe who starts acting funny through the day.

Keep appearing for more interviews while on company time

While on NP, I used to feel so sleepy and tired I started declining some meetings and not acknowledging requests from my lead. On my LWD farewall, my lead tells the team that I was a very proactive individual who used to take up tasks instantly(sarcastically). I felt kinda bad though.

Shift + Delete few things