Actual train of thought in my brain within the last few days:
Sprinklers are like an erector set for grown ups . . . Except cooler because it's with water . . . pipes and connectors would be a good toy for kids . . . it would be cool if kids could hook up pipes in different ways and then run water through them . . . that wouldn't really work because it's too hard to keep the connections from leaking . . . I wonder if you could make some kind of toy with easy to make connections . . .Ok, all of that is just normal random activity in my brain that was soon forgotten and would have stayed forgotten — until I saw this.
(Make sure you follow the link to where they found it to see the awesome video of it in action!)