Josh Lindenmuth writes: "What is the most interesting gadget, product, or device that you've ever built on your own? Cool computers, cars, hovercraft, handheld devices, fusion reactors... I'd love to hear what other slashdot readers have built!
In high school I was involved in an engineering competition where we needed to create a machine that could move 100 lbs of groceries from a disabled person's car up and down a set of stairs, and then into their kitchen. It was probably the coolest thing I ever built (there were only 3 of us on the team), even though the wooden treads started splintering halfway up the stairs (we didn't have a metal shop, so it was made entirely out of wood, spare boat parts, and conveyor belts) and then it completely destroyed the stairs on its way down (it weighed over 300 lbs)."
The teen's fusion device is obviously not a self-sustaining reactor, but it still shows how fusion technology is becoming more accessible. Hopefully this points to a future where large scale fusion reactors are both economical and widely used."