I asked for (and got) a Perplexus puzzle sphere for Christmas. I had thought I'd bring it to work, as a companion to the Rubik's 360 I keep on my desk (it's a great conversation starter, and fun to play with while I'm on phone meetings - shh! :-). But the Perplexus has become so popular with everyone at home (even 3yo Gabe, who does surprisingly well with it once you get him started) that I don't dare take it to work for fear of angering Emma, Gabe and Rachel.

What is a Perplexus? It's like one of those marble labyrinth toys, where you twist and turn to move a steel bearing along a path. Except it's in 3D, and completely encased inside a 10 inch plastic sphere. The insides of it look like colorful plastic brain matter, and it's lots of fun to play with. I first heard about it in Make magazine, where they did a story on its creator, Michael McGinnin, and the giant-sized "Superplexuses" he creates (I WANT one of those!). BoingBoing also wrote about it (again) recently.

Here's a video of Emma playing with it and explaining it. Watch to the end to see her highly advanced technique. :-)

The Perplexus is available at ThinkGeek, and you can also now pick it up (a little cheaper) at Amazon.com (affiliate link). If you like brain exercise toys, you should definitely pick one up.

Oh, and to Jayden and Seth, who were so pleased with themselves for finishing the Rubik's 360? This is your next challenge. ;-)