Half a croissant, on a plate, with a sign in front of it saying '50c'
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Tesla Mouse

Battery-free, wireless mouse.
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Nikola Tesla's coil was invented to supply power to items without the need for batteries or wires. It was never really used for anything, other than cool science fair exhibits - why not use it to power our wireless mice?
rgovostes, Jul 20 2004

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       ...Because no one want to get electricuted.
BJS, May 12 2006
  
      
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