This is a simple maze game with control platform where you can put your fingers. Run a steel ball through the maze without falling into holes.

The toy is made of three seperate parts.
The support and controll part fit into the pivot (spherical) and you don't have to worry about cleaning the pivot (hanging strings).
I included the openSCAD file, you can comment other parts (with *) to generate one STL file.
The pivot needs to be rotated upside down to be printed correctly (uncomment).