Sure. There are a few threads on “Consistent Mnemonics” out there. Here is one I created 2 years ago that links to a few others discussing the process.
I realized I didn’t actually answer your question in my previous post (I forgot during my rant). I didn’t have a problem with the counting words, but here’s how I would tackle むっつ in my system:
I used “disconnected” for っ. This could be low frame rate, broken images, jittery animation, etc, as an analogy to the word being broken. So むっ would be a “broken moon” so I’d do something like "You look through a telescope with a broken lens and end up seeing 6 broken moons.
One warning. Making up your own mnemonics is work. It’s (IMO) worthwhile work, because a mnemonics that is personalized is likely to stick better, since you have more of a connection to it, but it isn’t without cost. Just coming up with a list of mnemonics for all the mora that work for you and don’t interfere with one another is time consuming. I did it only as individual mora came up in lessons.
Creating the mnemonics is also time consuming. My strategy these days is to only make WK style complex mnemonics for things that don’t stick after a review or two. For me, after the first few levels and I’d gotten into the swing of it, I found many lessons would stick without complicated mnemonics. So I do my lessons and only create mnemonics for things I’m still getting wrong in reviews after a day or two. I also read the WK mnemonics even if I don’t use them, because there are a lot of gems in there. Despite my rant, I think WK has a decent system. Just could use a bit of polish. 
Good luck!