Here's a very smart laser pointer built to hide in your headphone jack. Designed strictly for safe work purposes like during a presentation, the iPin will sip power from your iPhone but won't be draining that much of it.

It is activated using a free accompanying app, and has a safety feature ensuring it can't be accidentally turned on when you don't need it to. Just turn the laser 90 degrees when it's inserted in the headphone jack and it will remain inert until you turn it back.



Check it out here if you are interested: [iPin via The Gadgeteer]