This one was pretty hard to figure out and it uses 3 household things well 4 if you count the table. Here it goes. There once was this really rich guy and one day he got really mad at his butler so he murdered him. To make it look like someone else did it he set up a plan. He went in the kitchen for a few minutes set the burglar alarm (wich goes of if anything moves) and went golfing. Five minutes later the alarm went of. How did he do it? Heres the awnser he took a huge block of ice and put it on one end of a cookie sheet then he place the cookie sheet on a table. To balence the weight he put some silverwear (almost the whole drawer) and put it on the other end. When the ice melted there wasnt anything balencing the weight anymore so the pan fell of the table. Hope this helps