Hi, @DanThomas. I use and appreciate VIP - Variable Inspector Prompt often. (Yes, I've specified one or more variables to limit its scope.) Thank you!
Yes, if you shared a video (which are always done well), it would no doubt increase its usage.
With that said, other tools, like what @noisneil has shared here, sometimes fit like a glove.
While we are at it, I'd like to mention Checkpoint System: An Additional Way to Debug in KM by @tiffle.