Tomorrow is the big prank day and most of us are stuck in some kind of an office environment which means you have to get creative. For those of you that are tech savvy MaximumPC has instructions for a great prank using Skype and $10. Using the conference call feature in Skype you can make 24 phones in your office ring simaltanously from your computer. The best part is that the caller ID on the office phones will show Unknown Caller so as long as you can keep a straight face no one will know it is you. If you really want to mess with your coworkers ring their cell phones and desk phones at the same time.

CNN has also posted their list of the top ten office pranks which range from kind of lame to just flat out mean. Number 7 on their list was by far my favorite.

7. Placed a sign on the restroom door that read, “The company ran out of toilet tissue; please use your own resources.”

That is just a little slice of genius. Here is one of the meaner pranks.

4. Called the electric company, used a co-worker’s name and told them he was moving so the electricity got turned off at the co-worker’s house.

You can check out their full top ten here.

While I would love to pull the Skype prank the people at my company are spread across three different buildings so it would be hard for me to really enjoy the full effect. However, I think the door to the bathroom out in the maintenance shop is screening for a “The company ran out of toilet tissue; please use your own resources.” sign. On the other hand I could use Group Policy to set the wallpaper on every computer to something funny. The key will be to find a picture that won’t land me in HR.