I love your idea. And you can always add new sections. It looks very colourful. I think you can use cardboard as a basis on which you can glue the cards to make the box firmer. Thank you for sharing!
what a fantastic idea , credit cards are made so sturdy it is a shame that most people just shred and or dispose of them in the end but you have made a way to recycle them awesomely
chekccard