Anyone got any plans to carry out pranks tomorrow?

I've got a few on the go at work.

Rigged an air horn under somebody's chair so when they sit on it the horn will go off.

We have also setup a fake router to wind up one of the network engineers up so that they will believe one of our core routers is failing. When they enter certain commands to try and diagnose the fault it reboots. Even moved the security camera so it covers his desk ready

We've got a smoke machine that we are go