Legos, huzzah!
I wasn’t really into Legos as a kid. I made one unsuccessful attempt at building this very girly pink and purple Lego castle, the result of which didn’t meet my very high standards and caused me to swear off Legos forever and pledge my undying support to Lincoln Logs (I was prone to grand pronouncements like that as a kid. And as an adult.) Anyway, thank goodness these guys didn’t give up Legos after one bad castle building experience. Look what they did! Someone should give them one of those neat-o gold and jade medals for their accomplishment.
The Birds Nest

The Water Cube

You can see the rest of this awesomeness here.