When I was 12, my parents were planning on moving just because they were sick of our house or something. Really, we had no good reason to be moving. This REALLY sucked for my brother and I, because we had a few neighborhood friends that we were going to be quite far away from (about 30-45 min drive). One night, my dad was collecting some house-selling paperwork for taking into some broker or something. After he finished, he put it in a manila envelope, and left it on the stairs to take with him the next day.
After he and my mom went to bed, my brother and I grabbed the folder, pulled all the papers out of it and then replaced them with any random piece of paper we could find. We used anything from blank pages to fliers from other houses. Then, we took the real papers, and destroyed all of them. It was a great way to take out our fury by cutting, shredding and tearing all of those pages. Hell, we even fed one to our guinea pig, just so that worst-case scenario, they still wouldn't have all of it back.
I just love to imagine how embarrassing it must have been for my dad to sit down with whatever person he was meeting and open a folder full of random sheets of paper. In the end we still moved, and though it was a nice house and inevitably hooked us up with some new friends, I still can't say they did the right thing. That house's value doubled over the next 2 years, and some of the houses that we have been in since we have had to sell because we didn't have enough money to stay in them. The kind of money boost we would have had could have averted many of our recent problems.