Good timing as I will be mouse camm-ing our kitchen tonight due to suspicious movements in one corner. I like the idea of triggering a nerf gun barrage might scare them off. Sprung trap set (away from camera view) unfortunately as yet to find a more reliable way of clearing them out.
@rhb - have you seen this:
https://www.lfgss.com/comments/15933656/
The rpi using MotionOS, that is. It seems like this would be veryt good for your project.