A coworker of mine created these buildable space ships and partnered up with a toy company to turn them into an official set of toys: Snap Ships.
They just came out so I bought one and set the boys loose to make this pair of ships.
There are so many different engines, wings, guns, etc. that snap together. Very cool.
And the boys had a lot of fun building their ships. Here's Evan's: the Fal X.
James needed some help so Evan came to the rescue to help finish the Wasp.
Then Evan wanted to combine the 2 together to make a new ultra ship with as much fire power as he could fit on it.
Oh yeah, look at that beast.
Very cool construction set.