[Stl-986]

Tinkercad is good to use, pretty powerful, free and many youtube videos on how to do things. I mainly use what's part of Windows. 3D Builder. It is very, very basic....but it works for most things. I do use Tinkercad as well.

Take a look on thingiverse. There is one design for a cup holder that goes into the arm rest. It's simple and easy. Plus it keeps sticky liquid away from the shifter...and electronics. Someone on here made one out of foam and uses that.

I'm just not a fan of putting any liquids where it is close to electronics like the hvac/radio.

Keep in mind a few things also.
1) superglue does not work well to keep 2 pieces of PLA together, even worse in a car.
2) use plan for prototyping things, but use abs or nylon for final versions that will go in a car.

PLA will warp in a car, and break (it's brittle in the cold)