New Kid on the Block

My Leo has his very own blog, called Leo's Lego Lab.
Every day he comes up with a new creation, he seems to keep them for a few days and then starts to pull bits off and reuse them.
It's almost a compulsion for him, his little fingers are so busy, he really understands how to make things on his own, and comes up with some amazing things, with full explanations of what and why.
There are so many I haven't documented, so this is our effort to capture the whole range of his contraptions.