Alright, here's the first one to try: convince your sister that she's dating and/or being stalked by some complete stranger. All you need is a series of pictures of some guy (preferably a friend that she hasn't seen). Make sure that they progress from happy, smiling pictures to disturbing and creepy. First, write a typical boyfriend to girlfriend letter and attach it to the first picture, then leave it somewhere conspicuous in her bedroom like her pillow. Write other letters, becoming increasingly violent and irratic (make sure the pictures reflect this change). Place these letters in increasingly inconspicuous places, so that she finds them in the correct order. In other words, the further you go, the better you hide the letters/pictures. Eventually write one in which he breaks up with her, and attach a picture of someone else (preferably that she knows) and claim that they are now dating them. Make sure that the letter attempts to make her jealous. I tried this one out on my sister, but without proper pictures, it was on a much smaller scale than what I have described. Nonetheless, the following is what she found in her bedroom last night.
