Making thousands of dollars with a simple nickel is possible if you look closely at your change. This is the five-cent coin ...

This is a 5 cent tilt sensor ... This one is new to us though. The design is fairly simple, you insert 4 bits of wire to serve as contacts and the coin will make contact with only two at a ...

There are also nationalistic sentiments involved: in the US, the one-cent coin represents President Lincoln; in the UK, the penny is seen as some form of national identity. And yet both arguments are ...