Some of my favorites that I've done in the past:

Change your Clothes (works with smaller offices) Tell everyone but your target (someone higher up or that always pays to attention to detail) to bring a couple of changes of clothes to work. Then walk by your target with a different set of clothes on every time.

No Smoking
If you work in a building that doesn't allow smoking (most states these days) put an ashtray with a few butts in it on the targets desk. (Doesn't work unless the janitorial staff is in on it).

Answer the Office Phone Prank
Tape down the phone button on the phone so when the phone starts ringing and they pick it up it will keep ringing.



Computer Gridlock Prank - Such a simple problem but IT won't be expecting it. My IT guy took 25 minutes and was about to replace a PC.
When they've left their desk, make a screen capture (print screen) of the person's desktop (preferably with a program open). Go into Windows Paint program and paste. Save as a bmp. Load the picture as the person's background. Sit back and watch them double clicking and rebooting fruitlessly. (Note: you can also create a bmp of an entire black screen and do the same. The mouse moves, but there's nothing to click on if you hide the icons!)





Mouse Trap - Only works with non ball mouses
Tape a dark piece of paper over the infrared opening on the bottom so the mouse doesn't register that it's moving. I've seen people replace the mouse because they didn't look under it.

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haha i have got to try some of them at the school office

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haha you must be quite the prankster mh, those are pretty good.

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Granted, I didn't think of them myself, got them online but I did do them.

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