Arduino-powered TV muter, but don't have the resources to start building a fusion reactor in your garage? Well, challenge yourself with this electron accelerator project that requires little more than a wine bottle, a vacuum pump, a neon sign transformer and a diode from a microwave oven. OK, so that's not exactly a list of components you're likely to have laying around, but they're not terribly difficult to come by and at the end of the day you'll have your very own, home-made cathode ray tube. That's right, just like the one inside that TV you finally junked last week. You won't be able to create your own old-school display with it, but you will be able to observe interesting effects like sputtering (a ring of metal ion deposits) and magnetic deflection. Check out the instructions at the source and the video after the break.