??? Shouldn't that be "Smartphones" instead? Even if the Raspberry Pi is popular among a certain segment of people, it is nowhere close to being as mainstream as smartphones which have revolutionized the way we use technology.
The Micro:Bit at least actually got a foothold in UK education.
I do have one project idea for using my stack of RPis, though (a badging/console login system for fighting game tournaments) but that is waaaay on the back burner.
To be fair, the Micro:Bit exists because of the lessons learned from the failure of the Raspberry Pi in education. In a strange sense, it's the 2.0 version of what the Pi was supposed to be; the Pi lives on because of the hobbyist community, but it failed fairly comprehensively at its intended purpose.