Each of these projects is something I think I could probably figure out how to make in a year (but not really - I simply couldn't do the hardware side with my toolset).
Then I look at his youtube videos and see he is putting out one of these videos each week.
The level of productivity is insane.
For example, in the basketball 2.0, he mentioned doing the 1.0 version a few weeks before. Then in a few weeks, he is doing something equivalent to Mark Rober's dart board (that took Mark 2 years with help) - while creating other videos.
How is this possible?