Isn't it cool to watch what they come up with? My little guy's playroom is getting painted and finally decorated so all of his "junk" is spread all over the living room <YUCK> His favorite toy right now is Legos and all week while he has been playing with them on the sofa, he keeps dropping pieces that proceed to fall under the sofa. I was cleaning the kitchen when I heard an "A-Ha!" from the living room - DS6 was beaming and holding this bizarre looking contraption he made out of legos - he called it his "grab-i-nator" (thanks Phineas and Ferb) and he showed me how it can reach under the couch and retrieve all of the lego pieces that had fallen underneath :-)