Here's a nice little bauble: a tiny shim that sits between your phone's SIM and the phone, which unlocks the handset. Note the admirable use of the grocer's apo'strophe in the sell-copy -- a sure sign of daffy ingenuity.
Link (via Red Ferret)
This SIM unlock is made of a very thin piece of FPC (0.10mm) with a Microcontroller mounted on, that goes between your Operator's SIM card & the phone's SIM socket.
Because of it's very thin & slim design it fits into almost all phone's on the market and can also be easily removed again. It's got Gold Immersion and makes perfect contact with the card and the socket at ALL times.