It may not cut through much, perhaps not even warm butter, but this gorgeous little LEGO chainsaw by František Hajdekr is one of the coolest things I have ever seen. And it really works! The Technic panels and liftarms fit together as snugly as a jigsaw puzzle. Inside you’ll find a battery box and a Power Functions motor. The safety guard also acts as a safety catch. A simple trigger controls the action. But why take my word for it? See for yourself!

Bonus: the builder has also constructed a power drill and a dune buggy, which also feature Power Functions functionality.