The slotted cover under the frunk of my Tesla did a terrible job keeping leaves out of the cabin air intake. This model fits my 2020 Model Y but other models might have double intakes or different shapes, so double check before printing.

The file is split in two to fit onto a Prusa printbed. You can crimp the two halves with binder clips to easily superglue them together.

I also included a thinner version that should print a bit faster but may be less sturdy.