I’m going long again, I know. I’m sorry. But this is something I’ve actually looked for in the past, and only now just found on the ‘Tube.
One of the non-“Top Gear”/”Grand Tour” series that James May has done is “James May’s Toy Stories“, in which he did interesting things with children’s toys.
For example: launching “Action Man” (the licensed UK knockoff of “G.I. Joe”, which someone describes as “the most derided toy in Britain”) on a rocket to see if he can exceed the speed of sound.
Example #2: build a three mile long slot car track.
Just one more: a Lego house. A Lego full-sized house.
Sadly, the house no longer exists: