The original could not be printed on the Prusa Mini because of its max print size: 180x180x180mm. So here's the adjusted version.
I have printed it in PETG and not in PLA because of temperatures in the car in the summer. The car however has ‘overheating protection’ that will cool the car down when the interior temp goes >40° C (104° F). This is providing that the battery has enough power. With this in mind you could probably use PLA.
To reduce the size I took off some of the gliders on the side and re-created them to be printed separately. However, when testing the tray without the glider extensions it worked fine.
Filament used: 180g
Could not find a photo of the tray in action but did want to share this.
The author remixed this model.
Based on a model by @Banjohat_243370
This looks great but I found that it could not be printed on the Prusa Mini because of its max print size: 180x180x180mm. So here's the adjusted version.