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Go into the victim's office and locate every pencil and pen in their desk. Paint the tips with clear nail polish. When they try to write, none of them will work. (After the prank is revealed, the nail polish can be removed by dipping the pens and pencils in polish remover.)
Take an item from the victim's office (something they use a lot such as a special coffee cup, stapler, pencil cup, etc.). Take a picture of the item and leave it on the victim's desk (in the same spot where the item was located), along with a "ransom" note.
Hold My Calls
Coordinate several people to help you play this prank. Have them take turns throughout the day calling the victim and asking for "Larry." At the end of the day, have someone make the final call and say "This is Larry. Do you have any messages for me?"
This prank is for a co-worker who has an office with a glass window in the door. Find a box slightly bigger than the window, cut off one end and tape it to the door around the window (with the open end at the top). Fill the box with empty cans, balloons, packing peanuts, or other item of your choice. When your victim looks in the window it will look like the entire room is filled! For added effect, put a chair or something behind the door to make it hard to open.
Can't Recognize>> NEW <<
Confuse your victim by changing all the icons on the computer desktop. Just rename all the icons to whatever you want. Then change the icon pictures: right click on each icon, choose "Properties" then the Shortcut tab, then "change icon."
If the victim uses Microsoft Word, go into the victim's computer and change the auto-correct feature so it misspells common words. Just open Word, choose "AutoCorrect Options" from the Tools menu, and have it replace common words like "the" and "and" with wacky words like "eggplant" or "Uranus." Be creative.