This is a fun print that I made in my free time. I wanted to see if I could design my own 3D maze puzzle, so the actual maze is very simple. The inside is hollow and can be used to store small items. The size of this model is fairly small as well, 50mm x 86mm (~2" x ~3.38").
SOLUTION (-C is counter clockwise, +C is clockwise): Turn the maze part -C until it slides up one level. Continue turning -C until it slides up another level (if it doesn't go up one level then it was the wrong starting spot. Return to the top and find the other starting spot). Turn +C until it slides up one level then continue turning +C and it will go up another level. Turn -C until it goes up another level. Turn the maze part +C and it will go up a level, but this is the wrong spot. Put the maze back DOWN a level and continue turning +C until it goes DOWN a level. Then turn the puzzle +C until it goes up level. From here, continue turning -C and going up levels until the puzzle is solved.
I printed with supports everywhere, then carefully used pliers to remove the supports during the post-print processing. I attached my model to the build plate using a brim.