Google awards YouTube channels that reach 100,000 subscribers a silver Play Button plaque (there are gold and diamond plaques for higher totals too).
After seven years on YouTube my London Meccano Club channel finally reached 1,000 subscribers on 13th November 2016, so I decided to build my own plaque to celebrate and thank my subscribers!
The worm gear is mounted between two collars, so it can be rotated by hand to move the three spur gears.
1000 YouTube Subscribers plaque