This is something I discovered just a few days back. For example I enjoy following trends in technology and if I search in Twitter for terms like “robotics”, “drones” or just “tech videos” I invariably find something interesting I haven’t seen before; for example a video about robots building a chair, vertical gardens in Mexico and drones in an ice cave.
Because it’s Twitter the videos are short, around a minute or two, and recent. If I have 15 minutes to kill, it may be the best way of quickly finding neat stuff.