We're owners of a VW California T6. When you store tetra paks (orange juice, milk, other) at the bottom of the fridge, they have the tendency of getting wet and soggy due to water condensate. We saw commercial solutions which cost a small fortune.
We took to designing this insert made of 4 parts, since the MK3 has a reduced print bed size.
Flip it by 180° so that the props that raise the insert are on top. Saves you printing with support (which is really not required).
Our insert is printed in PLA and works a charm. We didn't even glue the parts together because the puzzle fit is so good.
The author hasn't provided the model origin yet.