Okay, it's happened again.
Every so often, I write a story with no intended follow-up, only to (much later) have an idea come up that will insist on it. It happened with "Til Midnight". And "The Ring" also had a continuation (though that one was only as a comic on a paid site -- sorry). Now, it's "The Inventor's New Invention" that has demanded further attention. I hope you like it.
The entire series: The Inventor Gallery