Arduino CueCat interface
This device saves the output from a barcode scanner onto an SD card, thus making the scanner portable, not requiring a computer.
http://www.instructables.com/id/Make-...
Is the startup sound ridiculous? Yes, gloriously so.
The camera I took this with does a terrible job of capturing sound, so the sound on this video is artificially spliced in. But those are the exact sound files it plays.
