Or, what kids will do when you won't let them watch a screen...
This is a combination of real dominoes, jenga blocks and tumbling tower blocks.
The first attempt didn't work very well, but it looked great!
These last 2 shots are of a second creation, in which the dominoes go uphill. This one actually worked rather well, and ran all the way.
After this, the whole wall fell down, which was loud.