Devin over at Make Anything on YouTube has a very cool glow-in-the-dark double pendulum on his wall, and he's just shown it off.
James Bruton from XRobots is building another bipedal robot based on his 3D printed designs, this time taller and skinable.
Hoverbikes, 360 swings, Star Wars and loads of fireworks means an extra 2 million subscribers and a lot of fun.