What Crazy Things Has Your Husband Built?

Over the weekend my husband was busy sawing, gluing and making trips to Home Depot. I knew he was either building something or re-building something. I was just praying it wasn't the lawn mower. The last time he did something like this my sons battery operated car was re-wired to go 15 miles an hour. This time...my husband decided to build a pumpkin launcher. The launcher ended up being a mini pumpkin gun that might also shoot corn on the cob. Most men have built new inventions in their garage. Some turn out amazing and others end up in the garbage can. What is the coolest or craziest thing your husband has built?