It took already captured images of my friends' faces and turned their frowns or ambivalent looks into smiles, but didn't adjust the subjects' eyes. Though this was good for laughs, the eerie-looking grins pasted on faces reminded me of painted-on clowns' mouths. And some attempts to retouch a face couldn't detect the face to alter it. But a handful of the Happy Face Retouches looked somewhat natural.

Four separate image designs—a sun, a cup of coffee, a smiley face or a birthday cake. You know what? As jaded as we've become over cutesy gadgets, this thing's pretty great. We're buying these as gifts for everybody this Xmas. – Jason Chen

Product Page [Brookstone via Coolest Gadgets]