Using the feedhorn from a mini satellite disk, DIY genius Jeri Ellsworth has devised a clever hack that emulates the optical handheld scanners of yesteryear (that is, you won't be able to do a full-body scan from a distance). By turning one receiver in the feedhorn into a transmitter and using an optical mouse to give the device some X-Y orientation, she turns a bunch of simple electronic components into a handheld microwave imaging wand with penetration power up to a few centimeters – plenty to figure out which of your dinner guests is slipping the good silverware into his waistband.