Link
Project Next Generation: Entry for WeDo Monster Challenge. https://wedo.dreschallenges.com/category/challenges/monsters/ for more info.
http://www.youtube.com/watch?v=kTa7OwFAGyETwister
You are walking along singing your happy song, then out of nowhere the twists of terror begin. This monster used motion. However there was not a sensor incorporated. The structure easily tipped over. Great effort! Could be converted into a windmill of terror!