From Jelle’s Marble Runs:
A satisfying video of an epic marble run with a container filled with 100,000 tiny marbles! These marbles are 3 mm (1/8 inch) in diameter, in comparison, a regular marble is 16 mm (5/8 inch) in diameter.
It makes a silly, but soothing noise when these little marbles bounces through this marble maze made with glass sheets, acrylic cubes, wooden planks, some bells and more. I was really oddly satisfied while listening and looking to a ton of marbles!