Sure thing! I've tackled a similar project for a friend's Tacoma. We used a handheld 3D scanner (Revopoint POP) to scan his center console, cleaned up the mesh in Fusion 360, and then printed a custom phone mount that fit perfectly like the original.
Your idea for the cupholder is right on target. Just scan that area (structured-light scanners are the way to go), model the piece with mounting tabs or a friction fit, and print it using something durable like PETG or ABS. Just steer clear of glossy black surfaces during scanning, applying a powder spray makes a huge difference.
It's a pretty cool niche, so definitely go for it!