This is another maze-box with a lid that must navigate through a maze to take it off (or put it on).
It's been reconfigured to use a little more maze-solving psychology so the user tends to make wrong turns while trying to open the box. Most of my testers made wrong turns at every intersection except one. (Closing isn't as difficult as opening, but it a bit more complex than the original model.)
Fixed! The original maze8.stl file contained a number of errors; I have uploaded "maze8_fixed.stl" to correct them.