Designed and printed an animatronic "tail" driven by two Futaba S3004 servos and a Spektrum receiver (also programmed an Arduino UNO to run a random program). Added some foam to act as "ribs" and some foam tubing as legs and head. Covered the skeleton with a trash bag and hung it in the front yard. I also utilized a bluetooth speaker in the head for sound effects.
It was quite a hit on Halloween. There were a few confused visitors who believed there was a real person inside, as I would interact with them through my front window, only moving it when they asked a question, such as "are you ok?"