If there's one surefire way to make a Rubik's Cube less frustrating for kids -- or less-gifted adults -- it's to make it in the shape of a loveable bear that no one could possibly get angry with. Just look at Emmanuel Carrillo's adorable Ozobear, even when it's all mixed up it's impossible to want it to smash it against a wall because you can't figure out how to get it realigned.
There are a couple of catches, though. Emmanuel doesn't currently sell the Ozobear, but he has provided the 3D models to download for free. So you'll need access to a 3D printer to make one for yourself, and depending on the hardware you're using, there might be some additional smoothing required to make the pieces easily slide against each other.
The other issue, of course, is that there are no stickers to remove and replace if you can't figure out how to get the six pieces back into their original positions. It's a solve it or nothing affair, but thankfully there are only six moving pieces you have to contend with. [Cults via PSFK]