I think for a week everyone should try and mail things instead of e-mailing or hand delivering(Im obvioulsy talking personal things here, no work stuff - you loon). Not just to far away people, but to close people too.
Here is a phone conversation that could take place:
friend: Can i borrow that brown skirt of yours
Me: Sure. I'll go drop it at the post office tomorrow.
friend: Why would you do that. I only live 15 minutes away.
Me: It will be cool to see how long it takes. Its an experiment. Im mailing everything this week.
friend: Are you serious?
friend: Have you been drinking?
For Americans and most of the world its not AS funny to mail things as it will be for South Africans. You see in South Africa its not only a question of how many weeks (yes i said weeks) it will take the package to get to its destination - its also a question of will it get there at all??
Another fun thing you can do using the postal system is send out letters to people from your past. Example: I once mailed the first guy i kissed a long letter explaining why i was glad he was my first kiss (bear in mind this was about 6 years after the event). I didnt sign it or put a return address. I have no idea if he got it. I wish I could have seen his face when he read it. Im sure the letter would have made it onto his blog if he had one.
Oh, another thing you can do is randomly pick a name and address out the phone book and mail something completely random to the person, like maybe send a hammer and a jar of peanut butter and just write a card that says: "you know what must be done" or "if you build it, they will come"