I hate how Legos are sold as these kits that are supposed to make specific things, like Star Wars scenes. When I was a kid, we had to use our imaginations, and deal with pieces that didn't always conform to our will. Mostly, I made castles and defensive bases for my army men.
Heck, when I played with my action figures, they never conformed to the rules of Star Wars or GI Joes, which wasn't even a show yet. If Luke wanted to do battle with Leigha and Mork from Ork, then Darth Vader was his obvious friend (pre Empire Strikes Back).
Now, kids feel like they have to follow instructions or make what is on the package. Phooey on all of that. Teach them to use their imaginations! Develop creativity. That's what playing is for. They can follow directions when their older, or not. Teach them to rebel and NOT follow directions would probably make for a better start on life.