80mm OD (round version) / 80mm length (square version)
2 parts : lower part (that you can empty if necessary), and tray with maze pattern.
I added reinforcements in the first 2mm of the maze patterns for them to be sturdy enough, while providing enough drainage.
You may print the reinforcement height with contrasting colors for it not to be seen. Either manual color change or through MMU (3MF file of the tray includes that color change).
I chose black for the lower part and the reinforced first 2mm of the tray, and white for the remaining height of the maze.
The author hasn't provided the model origin yet.