Animatronics it is
I'm going to build an Animatronic Arm. The idea is that it would eventually allow me to create a life sized Halloween scene of Sleepy Hallow.
I've played around with Arduino already so I'll hook it up to a few servos. Buy a spot welder to piece together the skeletons. Then use my animation experience to get the hand to follow a set of key frame animations. Simple hand movements.
I am at the age now, that I really like my sleep at night. This is going to be hard to pull off with all the work I have. My wife like decorating and sort of liked the idea. Keep in mind, she hates my ideas. So the fact that she didn't hate this one is a sign for me to move forward.