There was a bunch of interesting stuff at Picnic10 but this was probably my favourite toy (a serious toy in this case). Essentially it's a small friendly PC under the hood that looks like an old electronic battleship game and uses objects with RFID tags to enable 3D educational experiences. It's cool, and I know my daughter would love it.

I also know that it could be hacked for all sorts of fun uses which is the whole point of toys isn't it? Great stuff. Video here (in Dutch but you can get he idea).