The Man has his hand in your inbox and cops are intimidating citizens who film them beating other citizens. So it's only logical to want to keep the private contents of your SD card, well, private. The Covert Coin from CCS Spy Gear is a precision-machined piece of retired US currency that are nearly indistinguishable from the real thing when closed.
It's great until you accidentally deposit 16GB of files into a parking meter. [Peta Pixel]