Dealing With 'Unlock' Laptop

In my workplace leaving laptop idle and unattended without password protection enabled is a serious offence. If caught by our security enforcer, the owner’s manager will be notified through emails and warning will also be issued. This is due to the competitive nature of our business.

However, in our department, we deal with this violation quite differently. Usually, when there is an ‘unlocked’ laptop laying around we would be using the laptop to send ‘interesting’ mails to people.

For example, mail to a randomly choosen girl/guy (usually recently join colleague) in our department…

…or mail to our manager…

…or even mail of special announcement.

Things get more exciting when people took the mail seriously (Congratulation him on his wedding, the girl accepts or rejects him, and our manager starts killing him with jobs); but since we kept playing the same tricks, people started realising the prank. We too start getting bored of playing the same prank everytime.

So lately, we don’t play with mail anymore. We start messing with scheduled program. For example, at certain time of the day, the laptop will play our condom mp3 or any other embarrassing song; or for no reason the laptop suddenly pops up a scary image, like this:

In addition, we too mess around with the wallpaper or background of the laptop:

I guess soon we will start getting tired of these tricks, any suggestion of trick or prank?