I designed this cupholder for a VW T4 Transporter, maybe it also works for other models (NOT TESTED!!!)
Tips & Tricks:
Material:
2x 3Mx6mm (DIN 912 / DIN-EN-ISO 4762)
2x M3x3mm Hot melt nuts ( https://de.aliexpress.com/item/1005003582355741.html?spm=a2g0o.order_list.order_list_main.34.1bdd5c5f1vSWGH&gatewayAdapt=glo2deu )
4x M5x12mm (ISO 7380-2)
4x M5 Nut
UPDATE 2023-05-01
UPDATE 2021-03-26
UPDATE 2021-04-02
UPDATE 2021-04-16
Feel free to add a comment it will help to make things better =)
The author marked this model as their own original creation.