Ever After Again?

You know that minute when you're sitting there, minding your own business, and suddenly your muse taps you on the shoulder?

Muse: Ooh, here's some ideas for that Snow White story you wanted to write.
Me: Thanks, but I don't have time right now. I really need to do two content edits for other people, am supposedly going to get content and line edits for my March release sometime before then, and need to write a Valentine's novella about a kindergarten teacher, and hamster, and a cute uncle.
Muse: So, here's the whole first chapter, complete with dialog and character names.
Me: But--
Muse: No, seriously, go write it down!
​Me: Sigh.

No? Just me? Okay, then.
In case you're wondering, I did go write that chapter down. And I love it. But I don't have time for more right now (hear that Muse?), so it's waiting. Hopefully later this year.
Do you love the idea of three fairy-tale retellings? I think it could be fun. But, as I told my muse, I have a few other things calling my attention and time right now.
Do you ever get distracted by a future project when you're neck-deep in something else? Or several other something elses? How do you keep from losing great ideas when they pop up during inconvenient times?