Increase the iron in your diet...

...by using your microwave to melt metal:

"The microwave work was triggered by a short reference to the refining of rare earth metals, at Illawara Technology Centre, which was mentioned by a visitor to the Central Saint Martins foundry, Dennis Glaser. Since these metals melt at temperatures above 800 degrees Celcius, it seemed possible that the method could be adapted to melt and cast small objects in the workshop or studio. If this could be done a domestic microwave would, effectively, become a cheap and accessible furnace."

I am so glad we didn't have the internet when I was a teenager. I'm put in mind of the time when I got paranoid about burglars and tried to wire up the window frame to the mains. Result? No lights, blown fuses and me trying to look nonchalant, as any other response may have invoked a somewhat disproportionate response from my dad.