If you take your boxes for Ticket to Ride with you, all cards are shuffled in the box. So I decided to make some cardholders:
Europe (base set)
Expansions:
UK / Pennsylvania
India / Switzerland
Japan / Italy
The cardholders fit neatly in the box and keep the cards together. I printed them in different colors, standing up. No support needed.
Please note: for the UK expansion, you need to print the uk-trains.stl twice.
The author hasn't provided the model origin yet.