I think it's quite normal.
From time to time you can have a flash idea about something and you will try to make it real.
Just to see if you are able to.
Then it could be something usable or not.
But it could be the fuel for another solution in the future....... If you are able to remember about it.
I once wrote a B4A application that would allow me to connect an old phone to my stereo and use my tablet to select and play the music that was stored on the phone. You know, like a Chromecast.