For this prank, you need one thing: masking tape. This prank is really simple. Just wait til you are alone in the house, and tape random stuff down. I used a tissue box, but you can tape a toilet seat down (this works well for boys), tape a bottle of ketchup to the refrigerator shelf it was originally on, the possibillities are endless! just remember where you put the stuff. It would be really awkward if you ate a hamburger and couldn't get the ketchup out!