Here’s a simple design for a skill-and-action game: Barrel of Makeys.
It’s an updated version (okay, it’s a knock off!) of the classic Barrel of Monkey but with robots instead of monkeys. It’s featured in the current issue of Make magazine, on newsstands and in libraries now. Cutting files online at Make magazine.
To create the monkey bot shapes, I laser cut flat acrylic “slices,” then laminated them together to made a 3 dimensional part. That technique could used in lots of other projects.