It's never too early to start the small geeks in your life on the right path.
This motorized, inflatable Dalek has cool flashing lights and a selection of intimidating phrases, which are activated via the wheel.
From Think Geek: "A 6v battery powered motor gives 360 degree steering and a maximum speed of nearly 2 mph! It won't hover or fly up stairs, but hey, we'll put in that suggestion for version 2.0. A soft bumper around the edge of the Dalek will protect your walls and furniture. The steering wheel has buttons which trigger ten authentic Dalek phrases so your wee geek can let people know that their extermination is at hand."
Note that it comes from the UK and therefore requires a UK power adapter, but that just makes it that much more exotic to us. Note also that if you are reading this you probably won't fit in this Dalek, but we won't judge you for trying.
Currently retails for $299.