I was a lucky entrant in Digiwish 2012, winning a DE0-Nano FPGA development board. Thanks Digikey for making my Christmas wish come true!
So if you open up a 9 V battery, you find 6 thin 1.5 V cells inside. But what was inside that lantern battery, the rechargeable PP3, or the funny shaped lump on the back of my laptop? Confronted with dead metal in the recycling drawer, I tried to find uses for the contents.