We've seen the viewfinder of a VHS camcorder hacked into a night-vision headset
, but this just might be even more retro than that. For those
seasoned enough to remember Ronco's Mr. Microphone, you may recall just how boring it became after a few short minutes of use. If you somehow managed to not discard the thing over the years, we've found the perfect use for it: a discrete spying device. Essentially, DIYers can strip the innards out, re-solder a few pieces and shove the resulting tidbits into an unassuming air freshener. From there, just tune to whatever open frequency you can find and you've got yourself a wireless eavesdropping tool like no other. Video after the break.