Think of a task that you can do easily: break an egg, sharpen a pencil, open a door, turn on a lamp, etc. Anything you can think of that you can do with a minimum of effort and materials.
Whatever the task, there is a much more complex and cumbersome way to do it: by means of a Rube Goldberg machine. Here is an example:
Interesting, isn't it? The materials and procedures are up to each one, the important thing is to obtain the same result in a less traditional, more fun and original way. A way of awakening the engineer in all of us.
As a side note, there are competitions held, even by prestigious universities, to see who can build the best and most efficient of these machines.
This is another example: